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<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2022-02-22T20:32:30.1066508+00:00 -->
<!-- Version            : 5.0.1.728 -->
<!-- Package ID         : ee9d30838ea943768ed3100f8ee435eb -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amendment Flag</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalYearFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalYearFocus" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentAnnualReport" xlink:type="locator" xlink:label="dei_DocumentAnnualReport" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentAnnualReport_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Annual Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentAnnualReport" xlink:to="dei_DocumentAnnualReport_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentAnnualReport_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Annual Report</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentTransitionReport" xlink:type="locator" xlink:label="dei_DocumentTransitionReport" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentTransitionReport_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentTransitionReport_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalPeriodFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalPeriodFocus" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line1</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address City Or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address State Or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:type="locator" xlink:label="dei_EntityWellKnownSeasonedIssuer" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Well-known Seasoned Issuer</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Well Known Seasoned Issuer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityVoluntaryFilers" xlink:type="locator" xlink:label="dei_EntityVoluntaryFilers" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Voluntary Filers</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Voluntary Filers</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCurrentReportingStatus" xlink:type="locator" xlink:label="dei_EntityCurrentReportingStatus" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityInteractiveDataCurrent" xlink:type="locator" xlink:label="dei_EntityInteractiveDataCurrent" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityPublicFloat" xlink:type="locator" xlink:label="dei_EntityPublicFloat" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntitySmallBusiness" xlink:type="locator" xlink:label="dei_EntitySmallBusiness" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CurrentFiscalYearEndDate" xlink:type="locator" xlink:label="dei_CurrentFiscalYearEndDate" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_IcfrAuditorAttestationFlag" xlink:type="locator" xlink:label="dei_IcfrAuditorAttestationFlag" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorName" xlink:type="locator" xlink:label="dei_AuditorName" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorFirmId" xlink:type="locator" xlink:label="dei_AuditorFirmId" />
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    <link:label xml:lang="en-US" xlink:label="mlm_ProductsAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Products and services.</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted from continuing operations attributable to common shareholders</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Current Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherIntangibleAssetsNet" xlink:type="locator" xlink:label="us-gaap_OtherIntangibleAssetsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other intangibles, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIntangibleAssetsNet" xlink:to="us-gaap_OtherIntangibleAssetsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Intangible Assets Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease right-of-use assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncurrent assets held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Assets Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other noncurrent assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets" xlink:type="locator" xlink:label="us-gaap_Assets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrentAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsPayableCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable Current</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccruedSalariesBenefitsAndPayrollTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued salaries, benefits and payroll taxes</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccruedSalariesBenefitsAndPayrollTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Salaries Benefits And Payroll Taxes</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccruedOtherTaxesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued other taxes</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccruedOtherTaxesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Other Taxes Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:type="locator" xlink:label="us-gaap_InterestPayableCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current liabilities held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:to="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Of Disposal Group Including Discontinued Operation Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Current Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtNoncurrent" xlink:to="us-gaap_LongTermDebtNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income taxes, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Liabilities Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncurrent operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncurrent liabilities held for sale</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Of Disposal Group Including Discontinued Operation Noncurrent</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other noncurrent liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities" xlink:type="locator" xlink:label="us-gaap_Liabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Liabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Liabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock ($0.01 par value; 100.0 shares authorized; 62.4 and 62.3 shares outstanding at December 31, 2021 and 2020, respectively)</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares authorized</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Authorized</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Outstanding</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Par Or Stated Value Per Share</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Shares Outstanding</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets" xlink:type="locator" xlink:label="us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromLifeInsurancePolicies" xlink:type="locator" xlink:label="us-gaap_PaymentsForProceedsFromLifeInsurancePolicies" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_OtherIncomeAndExpensesAbstract_lbl" />
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    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsAbstract" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsAbstract" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_OrganizationPolicyTextBlock" xlink:type="locator" xlink:label="mlm_OrganizationPolicyTextBlock" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_BasisOfPresentationAndUseOfEstimatesPolicyTextBlock" xlink:type="locator" xlink:label="mlm_BasisOfPresentationAndUseOfEstimatesPolicyTextBlock" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_LeasesPolicyTextBlock" xlink:type="locator" xlink:label="mlm_LeasesPolicyTextBlock" />
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    <link:label xml:lang="en-US" xlink:label="mlm_LeasesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases Policy [Text Block]</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermPurchaseCommitmentTextBlock" xlink:to="us-gaap_LongTermPurchaseCommitmentTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermPurchaseCommitmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Purchase Commitment [Text Block]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock" xlink:type="locator" xlink:label="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of contracts of affreightment and royalty commitments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock" xlink:to="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Future Minimum Contracts of Affreightment and Royalty Commitments for All Noncancelable Agreements</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfContractsOfAffreightmentAndRoyaltyCommitmentsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Contracts Of Affreightment And Royalty Commitments Table [Text Block]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Data for Continuing Operation for Company&apos;s Reportable Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Segment Reporting Information By Segment [Text Block]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock" xlink:type="locator" xlink:label="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock" />
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of entity wide revenue and gross profit from external customers by products and services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock" xlink:to="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Revenues and Gross Profit by Product Line</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Entity Wide Revenue And Gross Profit From External Customers By Products And Services [Text Block]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Domestic and Foreign Total Revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:to="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue From External Customers By Geographic Areas Table [Text Block]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Noncash Investing and Financing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock" xlink:to="us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherSignificantNoncashTransactionsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Other Significant Noncash Transactions [Text Block]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental Disclosures of Cash Flow Information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:to="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Cash Flow Supplemental Disclosures Table [Text Block]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_NumberOfQuarriesAndYards" xlink:type="locator" xlink:label="mlm_NumberOfQuarriesAndYards" />
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfQuarriesAndYards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of quarries and yards.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_NumberOfQuarriesAndYards" xlink:to="mlm_NumberOfQuarriesAndYards_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination" xlink:type="locator" xlink:label="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination" />
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of states with aggregates business sales by destination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination" xlink:to="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_NumberOfCementPlants" xlink:type="locator" xlink:label="mlm_NumberOfCementPlants" />
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfCementPlants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of cement plants.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_NumberOfCementPlants" xlink:to="mlm_NumberOfCementPlants_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SignificantAccountingPoliciesLineItems" xlink:type="locator" xlink:label="mlm_SignificantAccountingPoliciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant accounting policies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SignificantAccountingPoliciesLineItems" xlink:to="mlm_SignificantAccountingPoliciesLineItems_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SignificantAccountingPoliciesTable" xlink:type="locator" xlink:label="mlm_SignificantAccountingPoliciesTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant accounting policies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SignificantAccountingPoliciesTable" xlink:to="mlm_SignificantAccountingPoliciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Geographical [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Geographical [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd#stpr_TX" xlink:type="locator" xlink:label="stpr_TX" />
    <link:label xml:lang="en-US" xlink:label="stpr_TX_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Texas</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_TX" xlink:to="stpr_TX_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_TX_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">TEXAS</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd#stpr_CA" xlink:type="locator" xlink:label="stpr_CA" />
    <link:label xml:lang="en-US" xlink:label="stpr_CA_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">California</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_CA" xlink:to="stpr_CA_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_CA_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">CALIFORNIA</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember" xlink:type="locator" xlink:label="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of aggregates business net sales in top five sales states.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember" xlink:to="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of Aggregates Business Net Sales in Top Five Sales states</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfAggregatesBusinessNetSalesInTopFiveSalesStatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Aggregates Business Net Sales In Top Five Sales States [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskByTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByTypeAxis" xlink:to="us-gaap_ConcentrationRiskByTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk By Type [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskTypeDomain" xlink:to="us-gaap_ConcentrationRiskTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Type [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeographicConcentrationRiskMember" xlink:type="locator" xlink:label="us-gaap_GeographicConcentrationRiskMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeographicConcentrationRiskMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographic Concentration Risk</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeographicConcentrationRiskMember" xlink:to="us-gaap_GeographicConcentrationRiskMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeographicConcentrationRiskMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Geographic Concentration Risk [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Benchmark</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk By Benchmark [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration Risk Benchmark</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Benchmark [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SalesRevenueSegmentMember" xlink:type="locator" xlink:label="us-gaap_SalesRevenueSegmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales Revenue Segment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueSegmentMember" xlink:to="us-gaap_SalesRevenueSegmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sales Revenue Segment [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:type="locator" xlink:label="us-gaap_PublicUtilitiesInventoryAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PublicUtilitiesInventoryAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryAxis" xlink:to="us-gaap_PublicUtilitiesInventoryAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PublicUtilitiesInventoryAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Public Utilities Inventory [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:type="locator" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:to="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Public Utilities Inventory Type [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_InventoryFinishedGoodsMember" xlink:type="locator" xlink:label="mlm_InventoryFinishedGoodsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_InventoryFinishedGoodsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Inventory finished goods.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_InventoryFinishedGoodsMember" xlink:to="mlm_InventoryFinishedGoodsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_InventoryFinishedGoodsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventory Finished Goods</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_InventoryFinishedGoodsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Finished Goods [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ExpendablePartsInventoryMember" xlink:type="locator" xlink:label="mlm_ExpendablePartsInventoryMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ExpendablePartsInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Expendable parts inventory.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ExpendablePartsInventoryMember" xlink:to="mlm_ExpendablePartsInventoryMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ExpendablePartsInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expendable Parts Inventory</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ExpendablePartsInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Expendable Parts Inventory [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SuppliesInventoryMember" xlink:type="locator" xlink:label="mlm_SuppliesInventoryMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_SuppliesInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Supplies inventory.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SuppliesInventoryMember" xlink:to="mlm_SuppliesInventoryMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SuppliesInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplies Inventory</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SuppliesInventoryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Supplies Inventory [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments For New Accounting Pronouncements [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_TypeOfAdoptionMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Type Of Adoption [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountingStandardsUpdate201613Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201613Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201613Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2016-13</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingStandardsUpdate201613Member" xlink:to="us-gaap_AccountingStandardsUpdate201613Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201613Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update201613 [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountingStandardsUpdate201814Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201814Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201814Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2018-14</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingStandardsUpdate201814Member" xlink:to="us-gaap_AccountingStandardsUpdate201814Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201814Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update201814 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfQuarriesAndYards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of quarries and yards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfQuarriesAndYards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Quarries And Yards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of states with aggregates business sales by destination</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfStatesWithAggregatesBusinessSalesByDestination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of States With Aggregates Business Sales By Destination</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfCementPlants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of cement plants</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfCementPlants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Cement Plants</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskPercentage1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total net sales, percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskPercentage1" xlink:to="us-gaap_ConcentrationRiskPercentage1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Percentage1</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OutOfPeriodExpense" xlink:type="locator" xlink:label="mlm_OutOfPeriodExpense" />
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Out of period expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OutOfPeriodExpense" xlink:to="mlm_OutOfPeriodExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Out of period expenses</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Out Of Period Expense</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_NumberOfDaysRestrictedFromUtilizingCash" xlink:type="locator" xlink:label="mlm_NumberOfDaysRestrictedFromUtilizingCash" />
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfDaysRestrictedFromUtilizingCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of days Restricted from utilizing cash.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_NumberOfDaysRestrictedFromUtilizingCash" xlink:to="mlm_NumberOfDaysRestrictedFromUtilizingCash_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfDaysRestrictedFromUtilizingCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of days restricted from utilizing cash</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NumberOfDaysRestrictedFromUtilizingCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Days Restricted From Utilizing Cash</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAbstract" xlink:type="locator" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash And Cash Equivalents [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsAbstract" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsAbstract_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="locator" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total cash, cash equivalents and restricted cash presented in the consolidated statements of cash flows</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod" xlink:type="locator" xlink:label="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod" />
    <link:label xml:lang="en-US" xlink:label="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for inventories in excess of sales requisite record period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod" xlink:to="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for inventories in excess of sales requisite record period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AllowanceForInventoriesInExcessOfSalesRequisiteRecordPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Inventories In Excess Of Sales Requisite Record Period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Property Plant And Equipment [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Property Plant And Equipment [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment By Type [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Type [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingMember" xlink:type="locator" xlink:label="us-gaap_BuildingMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingMember" xlink:to="us-gaap_BuildingMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Building [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:type="locator" xlink:label="us-gaap_MachineryAndEquipmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MachineryAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Machinery and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MachineryAndEquipmentMember" xlink:to="us-gaap_MachineryAndEquipmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MachineryAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Machinery And Equipment [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandImprovementsMember" xlink:type="locator" xlink:label="us-gaap_LandImprovementsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land Improvements</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LandImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Land Improvements [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_MinimumLikelihoodForRecognitionOfTaxBenefitRelatedToUncertainTaxPosition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum likelihood for recognition of tax benefit related to uncertain tax position.</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pension and Postretirement Benefit Plans</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:to="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_lbl" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedTranslationAdjustmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedTranslationAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other comprehensive (loss) earnings, net of tax</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOtherComprehensiveLoss" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative noncurrent deferred tax assets at end of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss" xlink:to="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Other Comprehensive Loss</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_UncategorizedAbstract" xlink:type="locator" xlink:label="mlm_UncategorizedAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_UncategorizedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Uncategorized.</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_UncategorizedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uncategorized [Abstract]</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Actuarial loss</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Postretirement Benefit Plans Before Tax</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Additional interest expense</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Earnings from Continuing Operations</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BasicAndDilutedNetIncomeLossFromContinuingOperationsAttributableToCommonShareholdersOfReportingEntity" xlink:type="locator" xlink:label="mlm_BasicAndDilutedNetIncomeLossFromContinuingOperationsAttributableToCommonShareholdersOfReportingEntity" />
    <link:label xml:lang="en-US" xlink:label="mlm_BasicAndDilutedNetIncomeLossFromContinuingOperationsAttributableToCommonShareholdersOfReportingEntity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Basic and diluted net income loss from continuing operations attributable to common shareholders of reporting entity.</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperations" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net earnings from continuing operations attributable to Martin Marietta</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Continuing Operations</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted" xlink:type="locator" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: distributed and undistributed earnings attributable to unvested participating securities</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Participating Securities Distributed And Undistributed Earnings Loss Diluted</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_BasicAndDilutedNetIncomeLossFromContinuingOperationsAttributableToCommonShareholdersOfReportingEntity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Basic And Diluted Net Income Loss From Continuing Operations Attributable To Common Shareholders Of Reporting Entity</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic weighted-average common shares outstanding</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:type="locator" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effect of dilutive employee and director awards</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Share Based Payment Arrangements</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Diluted weighted-average common shares outstanding</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, adoption date</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_ProductAndFreightRevenuesCustomerPaymentTerms" xlink:type="locator" xlink:label="mlm_ProductAndFreightRevenuesCustomerPaymentTerms" />
    <link:label xml:lang="en-US" xlink:label="mlm_ProductAndFreightRevenuesCustomerPaymentTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Product and freight revenues customer payment terms.</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_CustomerPaymentTermsBasedOnContractualBilling" xlink:type="locator" xlink:label="mlm_CustomerPaymentTermsBasedOnContractualBilling" />
    <link:label xml:lang="en-US" xlink:label="mlm_CustomerPaymentTermsBasedOnContractualBilling_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Customer payment terms based on contractual billing.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CustomerPaymentTermsBasedOnContractualBilling" xlink:to="mlm_CustomerPaymentTermsBasedOnContractualBilling_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PerformanceObligationPeriod" xlink:type="locator" xlink:label="mlm_PerformanceObligationPeriod" />
    <link:label xml:lang="en-US" xlink:label="mlm_PerformanceObligationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance obligation period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PerformanceObligationPeriod" xlink:to="mlm_PerformanceObligationPeriod_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RevenueRecognitionLineItems" xlink:type="locator" xlink:label="mlm_RevenueRecognitionLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RevenueRecognitionLineItems" xlink:to="mlm_RevenueRecognitionLineItems_lbl" />
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    <link:label xml:lang="en-US" xlink:label="mlm_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue recognition.</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ServiceMember" xlink:type="locator" xlink:label="us-gaap_ServiceMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ServiceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Service</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ServiceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Service [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CAAndCOMember" xlink:type="locator" xlink:label="mlm_CAAndCOMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_CAAndCOMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">CA and CO.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CAAndCOMember" xlink:to="mlm_CAAndCOMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_CAAndCOMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CALIFORNIA and COLORADO</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CAAndCOMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">C A And C O [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfTiming" xlink:type="locator" xlink:label="us-gaap_RevenuePerformanceObligationDescriptionOfTiming" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenuePerformanceObligationDescriptionOfTiming_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Performance Obligation Description Of Timing</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PerformanceObligationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance obligations, period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PerformanceObligationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Performance Obligation Period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ProductAndFreightRevenuesCustomerPaymentTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and freight revenues customer payment terms</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ProductAndFreightRevenuesCustomerPaymentTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Product And Freight Revenues Customer Payment Terms</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CustomerPaymentTermsBasedOnContractualBilling_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer payments terms based on contractual billing</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CustomerPaymentTermsBasedOnContractualBilling_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Payment Terms Based On Contractual Billing</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future revenues from unsatisfied performance obligations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligation" xlink:to="us-gaap_RevenueRemainingPerformanceObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance obligations, customer satisfaction period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ConsolidationItemsDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingSegmentsMember" xlink:to="us-gaap_OperatingSegmentsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Segments [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Business Segments [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BuildingMaterialsBusinessEastGroupMember" xlink:type="locator" xlink:label="mlm_BuildingMaterialsBusinessEastGroupMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessEastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Building materials business east group.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_BuildingMaterialsBusinessEastGroupMember" xlink:to="mlm_BuildingMaterialsBusinessEastGroupMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessEastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building Materials Business East Group</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessEastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Building Materials Business East Group [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BuildingMaterialsBusinessWestGroupMember" xlink:type="locator" xlink:label="mlm_BuildingMaterialsBusinessWestGroupMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessWestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Building materials business west group.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_BuildingMaterialsBusinessWestGroupMember" xlink:to="mlm_BuildingMaterialsBusinessWestGroupMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessWestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building Materials Business West Group</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessWestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Building Materials Business West Group [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BuildingMaterialsBusinessMember" xlink:type="locator" xlink:label="mlm_BuildingMaterialsBusinessMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Building materials business.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_BuildingMaterialsBusinessMember" xlink:to="mlm_BuildingMaterialsBusinessMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building Materials Business</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BuildingMaterialsBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Building Materials Business [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_MagnesiaSpecialtiesMember" xlink:type="locator" xlink:label="mlm_MagnesiaSpecialtiesMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_MagnesiaSpecialtiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Magnesia specialties.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_MagnesiaSpecialtiesMember" xlink:to="mlm_MagnesiaSpecialtiesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_MagnesiaSpecialtiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Magnesia Specialties</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_MagnesiaSpecialtiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Magnesia Specialties [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Service revenues</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs in excess of billings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerAssetNet" xlink:to="us-gaap_ContractWithCustomerAssetNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Asset Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Billings in excess of costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiability" xlink:to="us-gaap_ContractWithCustomerLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Liability</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue recognized from contract liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Liability Revenue Recognized</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConstructionContractorReceivableRetainage" xlink:type="locator" xlink:label="us-gaap_ConstructionContractorReceivableRetainage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConstructionContractorReceivableRetainage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retainage on contracts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionContractorReceivableRetainage" xlink:to="us-gaap_ConstructionContractorReceivableRetainage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConstructionContractorReceivableRetainage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Construction Contractor Receivable Retainage</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale" xlink:type="locator" xlink:label="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale" />
    <link:label xml:lang="en-US" xlink:label="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Goodwill reclassified from (allocated to) assets held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale" xlink:to="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfGoodwillTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Goodwill [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfGoodwillTable" xlink:to="us-gaap_ScheduleOfGoodwillTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Goodwill [Table]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_EastGroupMember" xlink:type="locator" xlink:label="mlm_EastGroupMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_EastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">East group.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_EastGroupMember" xlink:to="mlm_EastGroupMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_EastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">East Group</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_EastGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">East Group [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_WestGroupMember" xlink:type="locator" xlink:label="mlm_WestGroupMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_WestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">West group.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_WestGroupMember" xlink:to="mlm_WestGroupMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_WestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">West Group</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_WestGroupMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">West Group [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillLineItems" xlink:type="locator" xlink:label="us-gaap_GoodwillLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillLineItems" xlink:to="us-gaap_GoodwillLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:type="locator" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement period adjustments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:to="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Purchase Accounting Adjustments</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:type="locator" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillAcquiredDuringPeriod" xlink:to="us-gaap_GoodwillAcquiredDuringPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Acquired During Period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill reclassified from/(allocated to) assets held for sale</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_GoodwillReclassifiedFromAllocatedToAssetsHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Reclassified From Allocated To Assets Held For Sale</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit" xlink:type="locator" xlink:label="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Divestitures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit" xlink:to="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Written Off Related To Sale Of Business Unit</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillTransfers" xlink:type="locator" xlink:label="us-gaap_GoodwillTransfers" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillTransfers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transfer of operations from East Group to West Group</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillTransfers" xlink:to="us-gaap_GoodwillTransfers_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillTransfers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Transfers</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end of period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Finite Lived Intangible Assets [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Finite Lived Intangible Assets [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets By Major Class [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Major Class Name [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:type="locator" xlink:label="us-gaap_NoncompeteAgreementsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncompetition agreements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncompeteAgreementsMember" xlink:to="us-gaap_NoncompeteAgreementsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncompete Agreements [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:type="locator" xlink:label="us-gaap_CustomerRelationshipsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Relationships</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerRelationshipsMember" xlink:to="us-gaap_CustomerRelationshipsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OperatingPermitsMember" xlink:type="locator" xlink:label="mlm_OperatingPermitsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_OperatingPermitsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating permits.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OperatingPermitsMember" xlink:to="mlm_OperatingPermitsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_OperatingPermitsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Permits</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OperatingPermitsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Permits [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_UseRightsAndOtherMember" xlink:type="locator" xlink:label="mlm_UseRightsAndOtherMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Use rights and other.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_UseRightsAndOtherMember" xlink:to="mlm_UseRightsAndOtherMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use Rights And Other</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Use Rights And Other [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TradeNamesMember" xlink:type="locator" xlink:label="us-gaap_TradeNamesMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trade names</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradeNamesMember" xlink:to="us-gaap_TradeNamesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trade Names [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Gross</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accumulated Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Accumulated Amortization</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Indefinite Lived Intangible Assets [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Indefinite Lived Intangible Assets [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite-lived Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets By Major Class [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite-lived Intangible Assets, Major Class Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets Major Class Name [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_UseRightsNotSubjectToAmortizationMember" xlink:type="locator" xlink:label="mlm_UseRightsNotSubjectToAmortizationMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsNotSubjectToAmortizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Use rights not subject to amortization.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_UseRightsNotSubjectToAmortizationMember" xlink:to="mlm_UseRightsNotSubjectToAmortizationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsNotSubjectToAmortizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use Rights Not Subject To Amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_UseRightsNotSubjectToAmortizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Use Rights Not Subject To Amortization [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite Lived Intangible Assets By Major Class [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets By Major Class [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite life intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets Excluding Goodwill</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired" xlink:type="locator" xlink:label="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired" />
    <link:label xml:lang="en-US" xlink:label="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite-lived and indefinite-lived intangible assets acquired.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired" xlink:to="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangibles assets acquired</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived And Indefinite Lived Intangible Assets Acquired</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefinitelivedIntangibleAssetsAcquired" xlink:type="locator" xlink:label="us-gaap_IndefinitelivedIntangibleAssetsAcquired" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefinitelivedIntangibleAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets acquired held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefinitelivedIntangibleAssetsAcquired" xlink:to="us-gaap_IndefinitelivedIntangibleAssetsAcquired_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefinitelivedIntangibleAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinitelived Intangible Assets Acquired</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AcquiredFiniteAndIndefiniteLivedIntangibleAssetsLineItems" xlink:type="locator" xlink:label="mlm_AcquiredFiniteAndIndefiniteLivedIntangibleAssetsLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_AcquiredFiniteAndIndefiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired finite and indefinite lived intangible assets.</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassTable" xlink:type="locator" xlink:label="mlm_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassTable" />
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    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_AcquiredFiniteAndIndefiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Finite And Indefinite Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1" xlink:type="locator" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total subject to amortization</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finitelived Intangible Assets Acquired1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:type="locator" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average amortization period</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Finite Lived Intangible Assets Weighted Average Useful Life</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization expense of intangible assets</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Intangible Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Next Twelve Months</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Two</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Three</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Four</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense After Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Business Acquisitions By Acquisition [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Acquiree [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_TillerCorporationMember" xlink:type="locator" xlink:label="mlm_TillerCorporationMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_TillerCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tiller Corporation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_TillerCorporationMember" xlink:to="mlm_TillerCorporationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_TillerCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tiller Corporation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_TillerCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tiller Corporation [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LehighHansonIncorporationWestRegionMember" xlink:type="locator" xlink:label="mlm_LehighHansonIncorporationWestRegionMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_LehighHansonIncorporationWestRegionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lehigh Hanson, Incorporation West Region [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_LehighHansonIncorporationWestRegionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lehigh Hanson Incorporation West Region [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementScenarioAxis" xlink:type="locator" xlink:label="srt_StatementScenarioAxis" />
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    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProFormaMember" xlink:type="locator" xlink:label="srt_ProFormaMember" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_SouthernCrushedConcreteMember" xlink:type="locator" xlink:label="mlm_SouthernCrushedConcreteMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_SouthernCrushedConcreteMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Southern Crushed Concrete.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SouthernCrushedConcreteMember" xlink:to="mlm_SouthernCrushedConcreteMember_lbl" />
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    <link:label xml:lang="en-US" xlink:label="mlm_SouthernCrushedConcreteMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Southern Crushed Concrete [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LehighWestRegionSouthernCrushedConcreteAndTillerCorporationMember" xlink:type="locator" xlink:label="mlm_LehighWestRegionSouthernCrushedConcreteAndTillerCorporationMember" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_BusinessCombinationNumberOfCementPlantsAcquired" xlink:type="locator" xlink:label="mlm_BusinessCombinationNumberOfCementPlantsAcquired" />
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfCementPlantsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination, number of cement plants acquired.</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_BusinessCombinationNumberOfStatesTargetedForDownstreamOperations" xlink:type="locator" xlink:label="mlm_BusinessCombinationNumberOfStatesTargetedForDownstreamOperations" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross" />
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    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfActiveAggregateQuarriesAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Number Of Active Aggregate Quarries Acquired</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfCementPlantsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, number of cement plants acquired</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfCementPlantsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Number Of Cement Plants Acquired</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfStatesTargetedForDownstreamOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, number of states targeted for downstream operations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationNumberOfStatesTargetedForDownstreamOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Number Of States Targeted For Downstream Operations</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition, percentage of voting interests acquired</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Percentage Of Voting Interests Acquired</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligations" xlink:type="locator" xlink:label="mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligations" />
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed asset retirement obligations.</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_BusinessCombinationsLineItems" xlink:type="locator" xlink:label="mlm_BusinessCombinationsLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combinations.</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_ScheduleOfBusinessCombinationsAndDispositionsTable" xlink:type="locator" xlink:label="mlm_ScheduleOfBusinessCombinationsAndDispositionsTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfBusinessCombinationsAndDispositionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of business combinations and dispositions table.</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfBusinessCombinationsAndDispositionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Business Combinations And Dispositions [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ScheduleOfBusinessCombinationsAndDispositionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Business Combinations And Dispositions [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Combinations [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BusinessCombinationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_lbl" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted net earnings from continuing operations per share</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings from operations</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityDiscontinuedOperations" xlink:type="locator" xlink:label="mlm_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityDiscontinuedOperations" />
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    <link:label xml:lang="en-US" xlink:label="mlm_NonCashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non cash investing activities related to discontinued operations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_NonCashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Provided By Used In Investing Activities Discontinued Operations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityDiscontinuedOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease, right-of-use asset</link:label>
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    <link:label xml:lang="en-US" xlink:label="mlm_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiabilityDiscontinuedOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance lease, right-of-use asset</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group, including discontinued operation, lease right-of-use assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group, including discontinued operation, valuation allowance for loss on sale.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation asset retirement obligations current.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group, including discontinued operation, lease obligations current.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation asset retirement obligations noncurrent.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent" xlink:type="locator" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group, including discontinued operation, lease obligations noncurrent.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent" xlink:to="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventories, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Inventory Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Property Plant And Equipment Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets, excluding goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Intangible Assets Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Goodwill Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Other Current Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current assets held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:to="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Of Disposal Group Including Discontinued Operation Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Property Plant And Equipment Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets, excluding goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Intangible Assets Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Lease Right Of Use Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Goodwill Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Other Noncurrent Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Valuation allowance for loss on sale</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceForLossOnSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Valuation Allowance For Loss On Sale</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total noncurrent assets held for sale</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Asset retirement obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Asset Retirement Obligations Current</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Lease Obligations Current</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total current liabilities held for sale</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Asset retirement obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Asset Retirement Obligations Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseObligationsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Lease Obligations Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total noncurrent liabilities held for sale</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AccountsAndOtherReceivablesGrossCurrent" xlink:type="locator" xlink:label="mlm_AccountsAndOtherReceivablesGrossCurrent" />
    <link:label xml:lang="en-US" xlink:label="mlm_AccountsAndOtherReceivablesGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Accounts and other receivables gross current.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AccountsAndOtherReceivablesGrossCurrent" xlink:to="mlm_AccountsAndOtherReceivablesGrossCurrent_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableGrossCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableGrossCurrent" xlink:to="us-gaap_AccountsReceivableGrossCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Gross Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherReceivablesGrossCurrent" xlink:type="locator" xlink:label="us-gaap_OtherReceivablesGrossCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherReceivablesGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other current receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherReceivablesGrossCurrent" xlink:to="us-gaap_OtherReceivablesGrossCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherReceivablesGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Receivables Gross Current</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccountsAndOtherReceivablesGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total accounts receivable</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AccountsAndOtherReceivablesGrossCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts And Other Receivables Gross Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: allowance for estimated credit losses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Doubtful Accounts Receivable Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsAndOtherReceivablesNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsAndOtherReceivablesNetCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsAndOtherReceivablesNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounts receivable, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsAndOtherReceivablesNetCurrent" xlink:to="us-gaap_AccountsAndOtherReceivablesNetCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsAndOtherReceivablesNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts And Other Receivables Net Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DueFromAffiliateCurrent" xlink:type="locator" xlink:label="us-gaap_DueFromAffiliateCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due from unconsolidated affiliates</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromAffiliateCurrent" xlink:to="us-gaap_DueFromAffiliateCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Due From Affiliate Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:type="locator" xlink:label="us-gaap_InventoryFinishedGoods" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryFinishedGoods_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finished products</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryFinishedGoods" xlink:to="us-gaap_InventoryFinishedGoods_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryFinishedGoods_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Finished Goods</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryWorkInProcess" xlink:type="locator" xlink:label="us-gaap_InventoryWorkInProcess" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryWorkInProcess_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Products in process</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryWorkInProcess" xlink:to="us-gaap_InventoryWorkInProcess_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryWorkInProcess_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Work In Process</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryRawMaterials" xlink:type="locator" xlink:label="us-gaap_InventoryRawMaterials" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryRawMaterials_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Raw materials</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryRawMaterials" xlink:to="us-gaap_InventoryRawMaterials_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryRawMaterials_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Raw Materials</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherInventorySupplies" xlink:type="locator" xlink:label="us-gaap_OtherInventorySupplies" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherInventorySupplies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplies and expendable parts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherInventorySupplies" xlink:to="us-gaap_OtherInventorySupplies_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherInventorySupplies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Inventory Supplies</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryGross" xlink:type="locator" xlink:label="us-gaap_InventoryGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryGross" xlink:to="us-gaap_InventoryGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Gross</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryValuationReserves" xlink:type="locator" xlink:label="us-gaap_InventoryValuationReserves" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryValuationReserves_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: allowances</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryValuationReserves" xlink:to="us-gaap_InventoryValuationReserves_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryValuationReserves_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Valuation Reserves</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Inventories, net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:type="locator" xlink:label="us-gaap_LandAndLandImprovementsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandAndLandImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land and Land Improvements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandAndLandImprovementsMember" xlink:to="us-gaap_LandAndLandImprovementsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandAndLandImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Land And Land Improvements [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_MineralReservesAndInterestsMember" xlink:type="locator" xlink:label="mlm_MineralReservesAndInterestsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_MineralReservesAndInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Mineral reserves and interests.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_MineralReservesAndInterestsMember" xlink:to="mlm_MineralReservesAndInterestsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_MineralReservesAndInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mineral Reserves and Interests</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_MineralReservesAndInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mineral Reserves And Interests [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:type="locator" xlink:label="us-gaap_ConstructionInProgressMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConstructionInProgressMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction in Progress</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionInProgressMember" xlink:to="us-gaap_ConstructionInProgressMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConstructionInProgressMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Construction In Progress [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FinanceLeaseRightOfUseAssetsMember" xlink:type="locator" xlink:label="mlm_FinanceLeaseRightOfUseAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease right-of-use assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FinanceLeaseRightOfUseAssetsMember" xlink:to="mlm_FinanceLeaseRightOfUseAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease Right Of Use Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Assets [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land and land improvements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization" xlink:to="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated depreciation, depletion and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization" xlink:to="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property, plant and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:to="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases" xlink:type="locator" xlink:label="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases" />
    <link:label xml:lang="en-US" xlink:label="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Depreciation and depletion and amortization excluding portion attributable to machinery and equipment under capital leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases" xlink:to="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BahamasAndCanadaMember" xlink:type="locator" xlink:label="mlm_BahamasAndCanadaMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_BahamasAndCanadaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Bahamas and Canada.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_BahamasAndCanadaMember" xlink:to="mlm_BahamasAndCanadaMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_BahamasAndCanadaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bahamas And Canada</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BahamasAndCanadaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Bahamas And Canada [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation, depletion and amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DepreciationAndDepletionAndAmortizationExcludingPortionAttributableToMachineryAndEquipmentUnderCapitalLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation And Depletion And Amortization Excluding Portion Attributable To Machinery And Equipment Under Capital Leases</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestCostsCapitalized" xlink:type="locator" xlink:label="us-gaap_InterestCostsCapitalized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestCostsCapitalized" xlink:to="us-gaap_InterestCostsCapitalized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Costs Capitalized</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Name [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember" xlink:type="locator" xlink:label="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Zero point six five zero percent senior notes, due twenty twenty three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember" xlink:to="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">0.650% Senior Notes, Due 2023</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Zero Point Six Five Zero Percent Senior Notes Due Twenty Twenty Three [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember" xlink:type="locator" xlink:label="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Four point two five percent senior notes due twenty twenty four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember" xlink:to="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">4.25% Senior Notes, Due 2024</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Four Point Two Five Percent Senior Notes Due Twenty Twenty Four [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember" xlink:type="locator" xlink:label="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Seven percent debentures due twenty twenty five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember" xlink:to="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">7% Debentures, Due 2025</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Seven Percent Debentures Due Twenty Twenty Five [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember" xlink:type="locator" xlink:label="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Three point four five zero percent senior notes due twenty twenty seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember" xlink:to="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">3.450% Senior Notes, Due 2027</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFourFiveZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Three Point Four Five Zero Percent Senior Notes Due Twenty Twenty Seven [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember" xlink:type="locator" xlink:label="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Three point five zero zero percent senior notes due twenty twenty seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember" xlink:to="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">3.500% Senior Notes, Due 2027</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Three Point Five Zero Zero Percent Senior Notes Due Twenty Twenty Seven [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember" xlink:type="locator" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Two point five zero zero percent senior notes due twenty thirty.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember" xlink:to="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2.500% Senior Notes, Due 2030</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Two Point Five Zero Zero Percent Senior Notes Due Twenty Thirty [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember" xlink:type="locator" xlink:label="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Two point four zero zero percent senior notes, due twenty thirty one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember" xlink:to="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2.400% Senior Notes, Due 2031</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Two Point Four Zero Zero Percent Senior Notes Due Twenty Thirty One [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember" xlink:type="locator" xlink:label="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Six point two five percentage of senior notes due two thousand thirty seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember" xlink:to="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">6.25% Senior Notes, Due 2037</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Six Point Two Five Percentage Of Senior Notes Due Two Thousand Thirty Seven [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember" xlink:type="locator" xlink:label="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Four point two five zero percent senior notes due twenty fourty seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember" xlink:to="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">4.250% Senior Notes, Due 2047</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Four Point Two Five Zero Percent Senior Notes Due Twenty Fourty Seven [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember" xlink:type="locator" xlink:label="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Three point two zero zero percent senior notes, due twenty fifty one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember" xlink:to="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">3.200% Senior Notes, Due 2051</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Three Point Two Zero Zero Percent Senior Notes Due Twenty Fifty One [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OtherNotesMember" xlink:type="locator" xlink:label="mlm_OtherNotesMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_OtherNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Other notes.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OtherNotesMember" xlink:to="mlm_OtherNotesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_OtherNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Notes</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OtherNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Notes [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: current maturities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Current</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DebtInstrumentMaturityDateYear" xlink:type="locator" xlink:label="mlm_DebtInstrumentMaturityDateYear" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentMaturityDateYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument maturity date year.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DebtInstrumentMaturityDateYear" xlink:to="mlm_DebtInstrumentMaturityDateYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentMaturityDateYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity year</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentMaturityDateYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Date Year</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate on notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Stated Percentage</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility interest rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd" xlink:to="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Interest Rate At Period End</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Redemption, Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Redemption, Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior to July 2, 2022 (2023 Par Call Date)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period One [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodTwoMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">On or After 2023 Par Call Date and Prior to Maturity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodTwoMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Two [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateAxis" xlink:type="locator" xlink:label="us-gaap_VariableRateAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateAxis" xlink:to="us-gaap_VariableRateAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain" xlink:type="locator" xlink:label="us-gaap_VariableRateDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateDomain" xlink:to="us-gaap_VariableRateDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UsTreasuryUstInterestRateMember" xlink:type="locator" xlink:label="us-gaap_UsTreasuryUstInterestRateMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UsTreasuryUstInterestRateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UsTreasuryUstInterestRateMember" xlink:to="us-gaap_UsTreasuryUstInterestRateMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UsTreasuryUstInterestRateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Us Treasury Ust Interest Rate [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodThreeMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior to April 15, 2031 (2031 Par Call Date)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodThreeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Three [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFourMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">On or After 2031 Par Call Date and Prior to Maturity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Four [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFiveMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior to January 15, 2051 (2051 Par Call Date)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodFiveMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Five [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DebtInstrumentRedemptionPeriodSixMember" xlink:type="locator" xlink:label="mlm_DebtInstrumentRedemptionPeriodSixMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentRedemptionPeriodSixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument, redemption, period six.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DebtInstrumentRedemptionPeriodSixMember" xlink:to="mlm_DebtInstrumentRedemptionPeriodSixMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentRedemptionPeriodSixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">On or After 2051 Par Call Date and Prior to Maturity</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentRedemptionPeriodSixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Six [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FloatingRateSeniorNotesDueTwentyTwentyMember" xlink:type="locator" xlink:label="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Floating rate senior notes due twenty twenty.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember" xlink:to="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floating Rate Senior Notes Due Twenty Twenty</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FloatingRateSeniorNotesDueTwentyTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Floating Rate Senior Notes Due Twenty Twenty [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember" xlink:type="locator" xlink:label="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Six point two five percent senior notes due twenty thirty seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember" xlink:to="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">6.25% Senior Notes, Due 2037</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SixPointTwoFivePercentSeniorNotesDueTwentyThirtySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Six Point Two Five Percent Senior Notes Due Twenty Thirty Seven [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevolvingCreditFacilityMember" xlink:to="us-gaap_RevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Longterm Debt Type [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Longterm Debt Type [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_IncludingAcquisitionBridgeDebtMember" xlink:type="locator" xlink:label="mlm_IncludingAcquisitionBridgeDebtMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Including acquisition bridge debt.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_IncludingAcquisitionBridgeDebtMember" xlink:to="mlm_IncludingAcquisitionBridgeDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Including Acquisition Bridge Debt</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_IncludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Including Acquisition Bridge Debt [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ExcludingAcquisitionBridgeDebtMember" xlink:type="locator" xlink:label="mlm_ExcludingAcquisitionBridgeDebtMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ExcludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Excluding acquisition bridge debt.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ExcludingAcquisitionBridgeDebtMember" xlink:to="mlm_ExcludingAcquisitionBridgeDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ExcludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excluding Acquisition Bridge Debt</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ExcludingAcquisitionBridgeDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Excluding Acquisition Bridge Debt [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_TradeReceivableCreditFacilityMember" xlink:type="locator" xlink:label="mlm_TradeReceivableCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_TradeReceivableCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Trade receivable credit facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_TradeReceivableCreditFacilityMember" xlink:to="mlm_TradeReceivableCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_TradeReceivableCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trade Receivable Facility</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_TradeReceivableCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trade Receivable Credit Facility [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ConduitLendersMember" xlink:type="locator" xlink:label="mlm_ConduitLendersMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ConduitLendersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">conduit lenders.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ConduitLendersMember" xlink:to="mlm_ConduitLendersMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ConduitLendersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conduit Lenders</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ConduitLendersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Conduit Lenders [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:type="locator" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">London Interbank Offered Rate(LIBOR)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">London Interbank Offered Rate L I B O R [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate principal amount of long term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Face Amount</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument redemption price percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:to="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Price Percentage</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis spread on variable rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Basis Spread On Variable Rate1</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DebtInstrumentPayableUponMaturity" xlink:type="locator" xlink:label="mlm_DebtInstrumentPayableUponMaturity" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentPayableUponMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument payable upon maturity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DebtInstrumentPayableUponMaturity" xlink:to="mlm_DebtInstrumentPayableUponMaturity_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentPayableUponMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument Payable Upon Maturity</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DebtInstrumentPayableUponMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Payable Upon Maturity</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember" xlink:type="locator" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Two point five zero zero percent senior notes due two thousand thirty.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember" xlink:to="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2.500% Senior Notes, Due 2030</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwoThousandThirtyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Two Point Five Zero Zero Percent Senior Notes Due Two Thousand Thirty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal Amount</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Effective Interest Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Effective Percentage</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDate" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Date</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility commitment</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationPeriod" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityExpirationPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior unsecured revolving facility, maturity period</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument maturity period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityExpirationDate1" xlink:to="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Expiration Date1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:type="locator" xlink:label="us-gaap_LettersOfCreditOutstandingAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Outstanding letters of credit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LettersOfCreditOutstandingAmount" xlink:to="us-gaap_LettersOfCreditOutstandingAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Letters Of Credit Outstanding Amount</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available for borrowing under revolving facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Remaining Borrowing Capacity</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCredit" xlink:type="locator" xlink:label="us-gaap_LineOfCredit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding borrowing under credit facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization" xlink:type="locator" xlink:label="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Ratio of consolidated net debt to earnings before interest taxes depreciation depletion and amortization.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization" xlink:to="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation" xlink:type="locator" xlink:label="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation" />
    <link:label xml:lang="en-US" xlink:label="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum consolidated debt reduction for unrestricted cash and temporary investments for debt covenant calculation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation" xlink:to="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation" xlink:type="locator" xlink:label="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation" />
    <link:label xml:lang="en-US" xlink:label="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount by which consolidated debt, for purposes of calculating the debt covenant ratio, may be reduced for unrestricted cash and cash equivalents, provided no amounts are outstanding under the revolving credit facility and the AR credit facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation" xlink:to="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt covenant</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RatioOfConsolidatedNetDebtToEarningsBeforeInterestTaxesDepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Ratio Of Consolidated Net Debt To Earnings Before Interest Taxes Depreciation Depletion And Amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reduction of consolidated debt in the debt ratio calculation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ConsolidatedDebtReductionForUnrestrictedCashAndCashEquivalentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Debt Reduction For Unrestricted Cash And Cash Equivalents For Debt Covenant Calculation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum consolidated debt reduction for unrestricted cash and temporary investments for debt covenant calculation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_MaximumConsolidatedDebtReductionForUnrestrictedCashAndTemporaryInvestmentsForDebtCovenantCalculation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Consolidated Debt Reduction For Unrestricted Cash And Temporary Investments For Debt Covenant Calculation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Next Twelve Months</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Year Two</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Year Three</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Year Four</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal After Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, carrying values</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:type="locator" xlink:label="us-gaap_LongTermDebtFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, fair values</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtFairValue" xlink:to="us-gaap_LongTermDebtFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Fair Value</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal income taxes:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Federal Income Tax Expense Benefit Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Current Federal Tax Expense Benefit</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Federal Income Tax Expense Benefit</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total state income taxes</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperationsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign income taxes:</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Current Foreign Tax Expense Benefit</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Foreign Income Tax Expense Benefit</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total foreign income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" xlink:to="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Income Tax Expense Benefit Continuing Operations</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income tax expense</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_IncomeTaxesLineItems" xlink:type="locator" xlink:label="mlm_IncomeTaxesLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncomeTaxesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_IncomeTaxesLineItems" xlink:to="mlm_IncomeTaxesLineItems_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_IncomeTaxTable" xlink:type="locator" xlink:label="mlm_IncomeTaxTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncomeTaxTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_IncomeTaxTable" xlink:to="mlm_IncomeTaxTable_lbl" />
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    <link:label xml:lang="en-US" xlink:label="mlm_IncomeTaxTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_IncomeTaxAuthorityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Domain]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State Tax Authority</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StateAndLocalJurisdictionMember" xlink:to="us-gaap_StateAndLocalJurisdictionMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">State And Local Jurisdiction [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Domestic State Tax Authority</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DomesticCountryMember" xlink:to="us-gaap_DomesticCountryMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Domestic Country [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign pretax earnings</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Continuing Operations Before Income Taxes Foreign</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationDeductions" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationDeductions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increased net earnings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationDeductions" xlink:to="us-gaap_IncomeTaxReconciliationDeductions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Reconciliation Deductions</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DeferredTaxAssetsValuationAndOtherReserves" xlink:type="locator" xlink:label="mlm_DeferredTaxAssetsValuationAndOtherReserves" />
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsValuationAndOtherReserves_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax assets, valuation and other reserves.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DeferredTaxAssetsValuationAndOtherReserves" xlink:to="mlm_DeferredTaxAssetsValuationAndOtherReserves_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DeferredTaxAssetsLeaseLiability" xlink:type="locator" xlink:label="mlm_DeferredTaxAssetsLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax assets lease liability.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DeferredTaxAssetsLeaseLiability" xlink:to="mlm_DeferredTaxAssetsLeaseLiability_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DeferredTaxLiabilitiesRightOfUseAssets" xlink:type="locator" xlink:label="mlm_DeferredTaxLiabilitiesRightOfUseAssets" />
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxLiabilitiesRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax liabilities right of use assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DeferredTaxLiabilitiesRightOfUseAssets" xlink:to="mlm_DeferredTaxLiabilitiesRightOfUseAssets_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DeferredTaxLiabilitiesEmployeeBenefits" xlink:type="locator" xlink:label="mlm_DeferredTaxLiabilitiesEmployeeBenefits" />
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxLiabilitiesEmployeeBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax liabilities employee benefits.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DeferredTaxLiabilitiesEmployeeBenefits" xlink:to="mlm_DeferredTaxLiabilitiesEmployeeBenefits_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGrossAbstract" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsGrossAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGrossAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax assets related to:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsGrossAbstract" xlink:to="us-gaap_DeferredTaxAssetsGrossAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGrossAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Gross [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsInventory" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsInventory_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsInventory" xlink:to="us-gaap_DeferredTaxAssetsInventory_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsInventory_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Inventory</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsValuationAndOtherReserves_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation and other reserves</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsValuationAndOtherReserves_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Valuation And Other Reserves</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net operating loss carryforwards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Operating Loss Carryforwards</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOtherComprehensiveLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accumulated other comprehensive loss</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxAssetsLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Lease Liability</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOther" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other items, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOther" xlink:to="us-gaap_DeferredTaxAssetsOther_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Other</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross deferred tax assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Gross</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Valuation allowance on deferred tax assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Valuation Allowance</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net deferred tax assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsNet" xlink:to="us-gaap_DeferredTaxAssetsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liabilities related to:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Property, plant and equipment</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Property Plant And Equipment</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Goodwill and other intangibles</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Goodwill And Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxLiabilitiesRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Right-of-use assets</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesInvestments" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Partnerships and joint ventures</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Investments</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxLiabilitiesEmployeeBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Employee benefits</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DeferredTaxLiabilitiesEmployeeBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities Employee Benefits</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total deferred tax liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Liabilities</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Deferred income taxes, net</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DomesticAndForeignOperatingLossCarryForwardExpirationDate" xlink:type="locator" xlink:label="mlm_DomesticAndForeignOperatingLossCarryForwardExpirationDate" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_TaxCreditCarryForwardExpirationYear" xlink:type="locator" xlink:label="mlm_TaxCreditCarryForwardExpirationYear" />
    <link:label xml:lang="en-US" xlink:label="mlm_TaxCreditCarryForwardExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax credit carry forward, expiration year.</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_OperatingLossCarryforwards" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Prior service (cost) credit</link:label>
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetOfTax" xlink:type="locator" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetOfTax" />
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    <link:loc xlink:href="mlm-20211231.xsd#mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesNetOfTax" xlink:type="locator" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesNetOfTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end of year</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFundedStatusOfPlan" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFundedStatusOfPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Funded status of the plan at end of year</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFundedStatusOfPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Funded Status Of Plan</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued benefit credit (cost)</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Amounts Recognized In Balance Sheet</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent" xlink:type="locator" xlink:label="mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent" xlink:to="mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncurrent asset pension and postretirement benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:to="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Assets For Plan Benefits Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Current pension and postretirement benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent" xlink:to="us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Pension Plan Liabilities Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Noncurrent pension, postretirement and postemployment benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent" xlink:to="us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Pension Plan Liabilities Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net amount recognized at end of year</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PostretirementHealthCarePlansMember" xlink:type="locator" xlink:label="mlm_PostretirementHealthCarePlansMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_PostretirementHealthCarePlansMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Postretirement Health Care Plans.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PostretirementHealthCarePlansMember" xlink:to="mlm_PostretirementHealthCarePlansMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_PostretirementHealthCarePlansMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Postretirement Health Care Plans [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PostretirementHealthCarePlansMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Postretirement Health Care Plans [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated benefit obligation for defined benefit pension plans</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:to="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Accumulated Benefit Obligation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Projected benefit obligation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated benefit obligation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of plan assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount rate</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount rate</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rate of increase in future compensation levels</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected long-term rate of return on assets</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" />
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Expected Future Benefit Payments Year Three</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Expected Future Benefit Payments Year Four</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Expected Future Benefit Payments Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Years 2027 -2031</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transition asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Amortization Of Transition Asset Obligation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior service cost (credit) - Net of tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Net Of Tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Actuarial (gain) loss - Net of tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Net Of Tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total - Net of tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Accumulated Other Comprehensive Income Net Of Tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Current pension and postretirement benefits</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Postretirement Defined Benefit Plan Liabilities Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Noncurrent pension, postretirement and postemployment benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent" xlink:to="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Postretirement Defined Benefit Plan Liabilities Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Net amount recognized at end of year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Postretirement Defined Benefit Plan Liabilities Current And Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Health care cost trend rate assumed for next year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:to="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rate to which the cost trend rate gradually declines</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:to="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Ultimate Health Care Cost Trend Rate1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Year the rate reaches the ultimate rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:to="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporation&apos;s matching obligations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount" xlink:to="us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan Employer Discretionary Contribution Amount</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans" xlink:type="locator" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined contribution plan name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans" xlink:to="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Description Of Defined Contribution Pension And Other Postretirement Plans</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum" xlink:type="locator" xlink:label="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of incentive compensation to acquire shares maximum.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum" xlink:to="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation" xlink:type="locator" xlink:label="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of discount rate to the market value on the incentive compensation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation" xlink:to="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CompanyNormalRetirementAge" xlink:type="locator" xlink:label="mlm_CompanyNormalRetirementAge" />
    <link:label xml:lang="en-US" xlink:label="mlm_CompanyNormalRetirementAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Company normal retirement age.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CompanyNormalRetirementAge" xlink:to="mlm_CompanyNormalRetirementAge_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Award Type [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_IncentiveStockMember" xlink:type="locator" xlink:label="mlm_IncentiveStockMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncentiveStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive stock.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_IncentiveStockMember" xlink:to="mlm_IncentiveStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncentiveStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive Compensation Stock Awards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_IncentiveStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Stock [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RestrictedStockServiceBasedMember" xlink:type="locator" xlink:label="mlm_RestrictedStockServiceBasedMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockServiceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Restricted stock service based.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RestrictedStockServiceBasedMember" xlink:to="mlm_RestrictedStockServiceBasedMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockServiceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Stock - Service Based Awards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockServiceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock Service Based [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RestrictedStockPerformanceBasedMember" xlink:type="locator" xlink:label="mlm_RestrictedStockPerformanceBasedMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockPerformanceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Restricted stock performance based.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RestrictedStockPerformanceBasedMember" xlink:to="mlm_RestrictedStockPerformanceBasedMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockPerformanceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Stock - Performance Based Awards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RestrictedStockPerformanceBasedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock Performance Based [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedStockMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Stock Awards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardDateAxis" xlink:type="locator" xlink:label="us-gaap_AwardDateAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardDateAxis" xlink:to="us-gaap_AwardDateAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Award Date [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardDateDomain" xlink:type="locator" xlink:label="us-gaap_AwardDateDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardDateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardDateDomain" xlink:to="us-gaap_AwardDateDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AwardDateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Award Date [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_StockOptionsTwoMember" xlink:type="locator" xlink:label="mlm_StockOptionsTwoMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Options granted in two thousand fourteen and two thousand thirteen.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_StockOptionsTwoMember" xlink:to="mlm_StockOptionsTwoMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options granted in 2015 and 2014</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Options Two [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_StockOptionsOneMember" xlink:type="locator" xlink:label="mlm_StockOptionsOneMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock options one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_StockOptionsOneMember" xlink:to="mlm_StockOptionsOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options granted prior to 2013</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_StockOptionsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Options One [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:type="locator" xlink:label="us-gaap_EmployeeStockOptionMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Options</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Employee Stock Option [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LegacyTXIPlanMember" xlink:type="locator" xlink:label="mlm_LegacyTXIPlanMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_LegacyTXIPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Legacy TXI plan.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_LegacyTXIPlanMember" xlink:to="mlm_LegacyTXIPlanMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_LegacyTXIPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legacy TXI plan</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LegacyTXIPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Legacy T X I Plan [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ShareholderValueAchievementPlan1996Member" xlink:type="locator" xlink:label="mlm_ShareholderValueAchievementPlan1996Member" />
    <link:label xml:lang="en-US" xlink:label="mlm_ShareholderValueAchievementPlan1996Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Shareholder value achievement plan 1996.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ShareholderValueAchievementPlan1996Member" xlink:to="mlm_ShareholderValueAchievementPlan1996Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ShareholderValueAchievementPlan1996Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shareholder Value Achievement Plan (1996)</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ShareholderValueAchievementPlan1996Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Shareholder Value Achievement Plan1996 [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DirectorsAwardsMember" xlink:type="locator" xlink:label="mlm_DirectorsAwardsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_DirectorsAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Directors awards.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DirectorsAwardsMember" xlink:to="mlm_DirectorsAwardsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DirectorsAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Directors&apos; Awards</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DirectorsAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Directors Awards [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of incentive compensation to acquire shares, maximum</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfIncentiveCompensationToAcquireSharesMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Incentive Compensation To Acquire Shares Maximum</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of discount rate to market value on the incentive compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfDiscountRateToMarketValueOnIncentiveCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Discount Rate To Market Value On Incentive Compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CompanyNormalRetirementAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Company normal retirement age</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CompanyNormalRetirementAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Company Normal Retirement Age</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance" xlink:type="locator" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance" />
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award equity instruments other than options adjustment for performance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance" xlink:to="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of Awards, January 1, 2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Awards, Awarded</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of Awards, Distributed</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of Awards, Forfeited</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of Awards, Adjustment for performance</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustment For Performance</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Awards, December 31, 2021</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformanceWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformanceWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformanceWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award equity instruments other than options adjustment for performance weighted average grant date fair value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformanceWeightedAverageGrantDateFairValue" xlink:to="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForPerformanceWeightedAverageGrantDateFairValue_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted-Average Grant-Date Fair Value, January 1, 2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-Average Grant-Date Fair Value, Awarded</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-Average Grant-Date Fair Value, Distributed</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate intrinsic values for options exercisable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:type="locator" xlink:label="us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excess tax benefits for stock options exercised</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:to="us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Excess Tax Benefit From Share Based Compensation Operating Activities</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant" xlink:type="locator" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant" />
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award number of additional shares available for grant.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant" xlink:to="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Awards available for grant</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional shares issuance under the plan</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Available For Grant</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan" xlink:type="locator" xlink:label="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan" />
    <link:label xml:lang="en-US" xlink:label="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cumulative shares issued under shareholder value achievement plan.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan" xlink:to="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock reserved for future issuance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued under the plan</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CumulativeSharesIssuedUnderShareholderValueAchievementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Shares Issued Under Shareholder Value Achievement Plan</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Awards granted</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock issued under the plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock-based compensation expense recognized</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized compensation cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average period over which unrecognized compensation cost will be recognized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpenseYearOne" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpenseYearOne" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense year one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpenseYearOne" xlink:to="mlm_FutureShareBasedCompensationExpenseYearOne_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpenseYearTwo" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpenseYearTwo" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense year two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpenseYearTwo" xlink:to="mlm_FutureShareBasedCompensationExpenseYearTwo_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpenseYearThree" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpenseYearThree" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense year three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpenseYearThree" xlink:to="mlm_FutureShareBasedCompensationExpenseYearThree_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpenseYearFour" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFour" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense year four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpenseYearFour" xlink:to="mlm_FutureShareBasedCompensationExpenseYearFour_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpenseYearFive" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFive" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpenseYearFive" xlink:to="mlm_FutureShareBasedCompensationExpenseYearFive_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureShareBasedCompensationExpense" xlink:type="locator" xlink:label="mlm_FutureShareBasedCompensationExpense" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future share-based compensation expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureShareBasedCompensationExpense" xlink:to="mlm_FutureShareBasedCompensationExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense Year One</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense Year Two</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense Year Three</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense Year Four</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Share Based Compensation Expense</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LesseeRemainingLeaseTerm" xlink:type="locator" xlink:label="mlm_LesseeRemainingLeaseTerm" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeRemainingLeaseTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee remaining lease term.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_LesseeRemainingLeaseTerm" xlink:to="mlm_LesseeRemainingLeaseTerm_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionTable" xlink:to="us-gaap_LesseeLeaseDescriptionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionLineItems" xlink:to="us-gaap_LesseeLeaseDescriptionLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeRemainingLeaseTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing lease term</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeRemainingLeaseTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Remaining Lease Term</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeFinanceLeaseOptionToExtend" xlink:type="locator" xlink:label="us-gaap_LesseeFinanceLeaseOptionToExtend" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeFinanceLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Option to extend lease</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeFinanceLeaseOptionToExtend" xlink:to="us-gaap_LesseeFinanceLeaseOptionToExtend_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeFinanceLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Finance Lease Option To Extend</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeFinanceLeaseOptionToTerminate" xlink:type="locator" xlink:label="us-gaap_LesseeFinanceLeaseOptionToTerminate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeFinanceLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Option to terminate lease</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeFinanceLeaseOptionToTerminate" xlink:to="us-gaap_LesseeFinanceLeaseOptionToTerminate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeFinanceLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Finance Lease Option To Terminate</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FinanceLeaseCostsAbstract" xlink:type="locator" xlink:label="mlm_FinanceLeaseCostsAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseCostsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease costs.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FinanceLeaseCostsAbstract" xlink:to="mlm_FinanceLeaseCostsAbstract_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseCost" xlink:to="us-gaap_OperatingLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Cost</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseCostsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance lease cost:</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseCostsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Costs [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of right-of-use assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:to="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Amortization</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseInterestExpense" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseInterestExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest on lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseInterestExpense" xlink:to="us-gaap_FinanceLeaseInterestExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Interest Expense</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableLeaseCost" xlink:type="locator" xlink:label="us-gaap_VariableLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableLeaseCost" xlink:to="us-gaap_VariableLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease Cost</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermLeaseCost" xlink:type="locator" xlink:label="us-gaap_ShortTermLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermLeaseCost" xlink:to="us-gaap_ShortTermLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Lease Cost</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCost" xlink:type="locator" xlink:label="us-gaap_LeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Cost</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RoyaltyExpense" xlink:type="locator" xlink:label="us-gaap_RoyaltyExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RoyaltyExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Royalties expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RoyaltyExpense" xlink:to="us-gaap_RoyaltyExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RoyaltyExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Expense</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LesseeOperatingLeasesAbstract" xlink:type="locator" xlink:label="mlm_LesseeOperatingLeasesAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_LesseeOperatingLeasesAbstract" xlink:to="mlm_LesseeOperatingLeasesAbstract_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LesseeFinanceLeasesAbstract" xlink:type="locator" xlink:label="mlm_LesseeFinanceLeasesAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeFinanceLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee finance leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_LesseeFinanceLeasesAbstract" xlink:to="mlm_LesseeFinanceLeasesAbstract_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross" xlink:type="locator" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease right of use asset property plant and equipment gross.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross" xlink:to="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment" xlink:type="locator" xlink:label="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease right of use asset accumulated depreciation property plant and equipment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment" xlink:to="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet" />
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease right of use asset property plant and equipment net.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet" xlink:to="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases:</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Leases [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel">Operating lease right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Current operating lease liabilities</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeFinanceLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Leases:</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeFinanceLeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Finance Leases [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Property Plant And Equipment Gross</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accumulated depreciation</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Accumulated Depreciation Property Plant And Equipment</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property, plant and equipment, net</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FinanceLeaseRightOfUseAssetPropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Property Plant And Equipment Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityCurrent" xlink:to="us-gaap_FinanceLeaseLiabilityCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Current</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Current Statement Of Financial Position Extensible List</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other noncurrent liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:to="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Noncurrent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total finance lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiability" xlink:to="us-gaap_FinanceLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_IncrementalBorrowingRate" xlink:type="locator" xlink:label="mlm_IncrementalBorrowingRate" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncrementalBorrowingRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental borrowing rate.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_IncrementalBorrowingRate" xlink:to="mlm_IncrementalBorrowingRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_IncrementalBorrowingRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated incremental percentage on interest rate</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_IncrementalBorrowingRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Borrowing Rate</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_WeightedAverageRemainingLeaseTermAbstract" xlink:type="locator" xlink:label="mlm_WeightedAverageRemainingLeaseTermAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted-average remaining lease term.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_WeightedAverageRemainingLeaseTermAbstract" xlink:to="mlm_WeightedAverageRemainingLeaseTermAbstract_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_WeightedAverageDiscountRateAbstract" xlink:type="locator" xlink:label="mlm_WeightedAverageDiscountRateAbstract" />
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted-average discount rate.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_WeightedAverageDiscountRateAbstract" xlink:to="mlm_WeightedAverageDiscountRateAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average remaining lease terms (years):</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Remaining Lease Term [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Remaining Lease Term1</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Weighted Average Remaining Lease Term1</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average discount rates:</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Discount Rate [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Discount Rate Percent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Weighted Average Discount Rate Percent</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:type="locator" xlink:label="us-gaap_StatementOperatingActivitiesSegmentAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementOperatingActivitiesSegmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:to="us-gaap_StatementOperatingActivitiesSegmentAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementOperatingActivitiesSegmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Operating Activities Segment [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:type="locator" xlink:label="us-gaap_SegmentOperatingActivitiesDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentOperatingActivitiesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentOperatingActivitiesDomain" xlink:to="us-gaap_SegmentOperatingActivitiesDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentOperatingActivitiesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Operating Activities [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:type="locator" xlink:label="us-gaap_SegmentContinuingOperationsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentContinuingOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Continuing Operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentContinuingOperationsMember" xlink:to="us-gaap_SegmentContinuingOperationsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentContinuingOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Continuing Operations [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:type="locator" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group, Held-for-sale, Not Discontinued Operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:to="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Heldforsale Not Discontinued Operations [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liabilities Payments Due [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Next Twelve Months</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Undiscounted Excess Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Present value of lease payments</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: current lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total long-term lease obligations</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liabilities Payments Due [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Next Twelve Months</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Undiscounted Excess Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Present value of lease payments</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: current lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total long-term lease obligations</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced" xlink:type="locator" xlink:label="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee Operating Lease Liability undiscounted fixed-payment commitments of leases but not yet commenced.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced" xlink:to="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undiscounted fixed-payment commitments of leases but not yet commenced</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_LesseeOperatingLeaseLiabilityUndiscountedFixedPaymentCommitmentsOfLeasesButNotYetCommenced_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Undiscounted Fixed Payment Commitments Of Leases But Not Yet Commenced</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfStockByClassTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Stock By Class [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTable" xlink:to="us-gaap_ScheduleOfStockByClassTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Stock By Class [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:type="locator" xlink:label="us-gaap_ClassOfStockLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockLineItems" xlink:to="us-gaap_ClassOfStockLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Stock [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:type="locator" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock reserved for issuance under stock-based award plans</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Capital Shares Reserved For Future Issuance</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:type="locator" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock repurchase program, shares authorized to be repurchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:to="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program Number Of Shares Authorized To Be Repurchased</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Repurchased During Period, Shares</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:type="locator" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock remaining under repurchase authorization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:to="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CommitmentsAndContingenciesLineItems" xlink:type="locator" xlink:label="mlm_CommitmentsAndContingenciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CommitmentsAndContingenciesLineItems" xlink:to="mlm_CommitmentsAndContingenciesLineItems_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CommitmentsAndContingenciesTable" xlink:type="locator" xlink:label="mlm_CommitmentsAndContingenciesTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CommitmentsAndContingenciesTable" xlink:to="mlm_CommitmentsAndContingenciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecorded Unconditional Purchase Obligation by Category of Item Purchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation By Category Of Item Purchased [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:type="locator" xlink:label="us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unconditional Purchase Obligation, Category of Goods or Services Acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:to="us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unconditional Purchase Obligation Category Of Goods Or Services Acquired [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:type="locator" xlink:label="us-gaap_CapitalAdditionsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalAdditionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital Addition Purchase Commitments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalAdditionsMember" xlink:to="us-gaap_CapitalAdditionsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalAdditionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capital Additions [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_EnergyAndServiceContractsMember" xlink:type="locator" xlink:label="mlm_EnergyAndServiceContractsMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_EnergyAndServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Energy and service contracts.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_EnergyAndServiceContractsMember" xlink:to="mlm_EnergyAndServiceContractsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_EnergyAndServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Energy And Service Contracts</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_EnergyAndServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Energy And Service Contracts [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:type="locator" xlink:label="us-gaap_GuaranteeObligationsByNatureAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsByNatureAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantor Obligations, Nature</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GuaranteeObligationsByNatureAxis" xlink:to="us-gaap_GuaranteeObligationsByNatureAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsByNatureAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Obligations By Nature [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:type="locator" xlink:label="us-gaap_GuaranteeObligationsNatureDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantor Obligations, Nature</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GuaranteeObligationsNatureDomain" xlink:to="us-gaap_GuaranteeObligationsNatureDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Obligations Nature [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember" xlink:type="locator" xlink:label="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolving line of credit expires in august two thousand fifteen.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember" xlink:to="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Line Of Credit Expires In August 2015</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RevolvingLineOfCreditExpiresInAugustTwoThousandFifteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Line Of Credit Expires In August Two Thousand Fifteen [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_InterestOnlyLoanMember" xlink:type="locator" xlink:label="mlm_InterestOnlyLoanMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_InterestOnlyLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest-only loan.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_InterestOnlyLoanMember" xlink:to="mlm_InterestOnlyLoanMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_InterestOnlyLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-only loan</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_InterestOnlyLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Only Loan [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsegmentsAxis" xlink:type="locator" xlink:label="us-gaap_SubsegmentsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsegments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsegmentsAxis" xlink:to="us-gaap_SubsegmentsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsegments [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsegmentsDomain" xlink:type="locator" xlink:label="us-gaap_SubsegmentsDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsegments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsegmentsDomain" xlink:to="us-gaap_SubsegmentsDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsegments [Domain]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_WoodvilleMember" xlink:type="locator" xlink:label="mlm_WoodvilleMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_WoodvilleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodville.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_WoodvilleMember" xlink:to="mlm_WoodvilleMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_WoodvilleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodville</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_WoodvilleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Woodville [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase commitments for property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance Sheet Amount</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AssetRetirementObligationDepreciationAndAccretion" xlink:type="locator" xlink:label="mlm_AssetRetirementObligationDepreciationAndAccretion" />
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationDepreciationAndAccretion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset retirement obligation depreciation and accretion.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AssetRetirementObligationDepreciationAndAccretion" xlink:to="mlm_AssetRetirementObligationDepreciationAndAccretion_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationDepreciationAndAccretion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset retirement obligation depreciation and accretion</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationDepreciationAndAccretion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Depreciation And Accretion</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AssetRetirementObligationLiabilitiesSettledRecoveries" xlink:type="locator" xlink:label="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries" />
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset retirement obligation liabilities settled recoveries.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries" xlink:to="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale" xlink:type="locator" xlink:label="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale" />
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset retirement obligation, liabilities reclassified to held for sale.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale" xlink:to="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:type="locator" xlink:label="us-gaap_AssetRetirementObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligation" xlink:to="us-gaap_AssetRetirementObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetRetirementObligationAccretionExpense" xlink:type="locator" xlink:label="us-gaap_AssetRetirementObligationAccretionExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationAccretionExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accretion expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationAccretionExpense" xlink:to="us-gaap_AssetRetirementObligationAccretionExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationAccretionExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Accretion Expense</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetRetirementObligationLiabilitiesIncurred" xlink:type="locator" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities incurred and liabilities assumed in business combinations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationLiabilitiesIncurred" xlink:to="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Liabilities Incurred</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities settled</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesSettledRecoveries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Liabilities Settled Recoveries</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetRetirementObligationRevisionOfEstimate" xlink:type="locator" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revisions in estimated cash flows</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationRevisionOfEstimate" xlink:to="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Revision Of Estimate</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities reclassified to held for sale</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AssetRetirementObligationLiabilitiesReclassifiedToHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation Liabilities Reclassified To Held For Sale</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetRetirementObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end of year</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedInsuranceNoncurrent" xlink:type="locator" xlink:label="us-gaap_AccruedInsuranceNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccruedInsuranceNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability reserve for insurance claims</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedInsuranceNoncurrent" xlink:to="us-gaap_AccruedInsuranceNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccruedInsuranceNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Insurance Noncurrent</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_SuretyBonds" xlink:type="locator" xlink:label="mlm_SuretyBonds" />
    <link:label xml:lang="en-US" xlink:label="mlm_SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Surety bonds.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_SuretyBonds" xlink:to="mlm_SuretyBonds_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_BalanceOfTop5SuretyBonds" xlink:type="locator" xlink:label="mlm_BalanceOfTop5SuretyBonds" />
    <link:label xml:lang="en-US" xlink:label="mlm_BalanceOfTop5SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Balance of top five surety bonds.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_BalanceOfTop5SuretyBonds" xlink:to="mlm_BalanceOfTop5SuretyBonds_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_GroupOfBondsAmount" xlink:type="locator" xlink:label="mlm_GroupOfBondsAmount" />
    <link:label xml:lang="en-US" xlink:label="mlm_GroupOfBondsAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Group of bonds, amount.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_GroupOfBondsAmount" xlink:to="mlm_GroupOfBondsAmount_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_Top5SuretyBondsPercentage" xlink:type="locator" xlink:label="mlm_Top5SuretyBondsPercentage" />
    <link:label xml:lang="en-US" xlink:label="mlm_Top5SuretyBondsPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Top five surety bonds percentage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_Top5SuretyBondsPercentage" xlink:to="mlm_Top5SuretyBondsPercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Surety bonds</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Surety Bonds</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BalanceOfTop5SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance of top 5 surety bonds</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_BalanceOfTop5SuretyBonds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Balance Of Top5 Surety Bonds</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_GroupOfBondsAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Group of bonds, amount</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_GroupOfBondsAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Group Of Bonds Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_Top5SuretyBondsPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of top 5 surety bonds</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_Top5SuretyBondsPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Top5 Surety Bonds Percentage</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_GuaranteeObligationsOutstanding" xlink:type="locator" xlink:label="mlm_GuaranteeObligationsOutstanding" />
    <link:label xml:lang="en-US" xlink:label="mlm_GuaranteeObligationsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantee obligations outstanding.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_GuaranteeObligationsOutstanding" xlink:to="mlm_GuaranteeObligationsOutstanding_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AffiliateLineOfCreditFacilityMaturityPeriod" xlink:type="locator" xlink:label="mlm_AffiliateLineOfCreditFacilityMaturityPeriod" />
    <link:label xml:lang="en-US" xlink:label="mlm_AffiliateLineOfCreditFacilityMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Affiliate line of credit facility maturity period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AffiliateLineOfCreditFacilityMaturityPeriod" xlink:to="mlm_AffiliateLineOfCreditFacilityMaturityPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_GuaranteeObligationsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due from affiliate</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_GuaranteeObligationsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Obligations Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AffiliateLineOfCreditFacilityMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit maturity period</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AffiliateLineOfCreditFacilityMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Affiliate Line Of Credit Facility Maturity Period</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:type="locator" xlink:label="us-gaap_GuaranteeObligationsMaximumExposure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsMaximumExposure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantee of affiliate&apos;s obligations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GuaranteeObligationsMaximumExposure" xlink:to="us-gaap_GuaranteeObligationsMaximumExposure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GuaranteeObligationsMaximumExposure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Obligations Maximum Exposure</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DueFromAffiliates" xlink:type="locator" xlink:label="us-gaap_DueFromAffiliates" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due from affiliate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromAffiliates" xlink:to="us-gaap_DueFromAffiliates_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Due From Affiliates</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maturity date</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance On First Anniversary</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears" xlink:type="locator" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears" xlink:to="us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecorded Unconditional Purchase Obligation Due After Five Years</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital expenditures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireProductiveAssets" xlink:to="us-gaap_PaymentsToAcquireProductiveAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Productive Assets</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due next twelve months.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due year two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due year three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due year four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment due after year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment" xlink:type="locator" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future minimum lease commitments related to contracts of affreightment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment" xlink:to="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due next 12 months.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due year two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due year three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due year four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Royalty commitments future minimum payments due after year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive" xlink:to="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due Next Twelve Months</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due Year Two</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due Year Three</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due Year Four</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightmentDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment Due After Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_FutureMinimumLeaseCommitmentsRelatedToContractsOfAffreightment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Minimum Lease Commitments Related To Contracts Of Affreightment</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due Next Twelve Months</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due Year Two</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due Year Three</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due Year Four</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due After Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RoyaltyCommitmentsFutureMinimumPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Royalty Commitments Future Minimum Payments Due</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PercentageOfEmployeesRepresentedInLaborUnion" xlink:type="locator" xlink:label="mlm_PercentageOfEmployeesRepresentedInLaborUnion" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfEmployeesRepresentedInLaborUnion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of employees represented in labor union.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PercentageOfEmployeesRepresentedInLaborUnion" xlink:to="mlm_PercentageOfEmployeesRepresentedInLaborUnion_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CollectiveBargainingAgreementExpirationMonthYear" xlink:type="locator" xlink:label="mlm_CollectiveBargainingAgreementExpirationMonthYear" />
    <link:label xml:lang="en-US" xlink:label="mlm_CollectiveBargainingAgreementExpirationMonthYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Collective bargaining agreement expiration month year.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CollectiveBargainingAgreementExpirationMonthYear" xlink:to="mlm_CollectiveBargainingAgreementExpirationMonthYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfEmployeesRepresentedInLaborUnion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of employees represented in labor union</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PercentageOfEmployeesRepresentedInLaborUnion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Employees Represented In Labor Union</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CollectiveBargainingAgreementExpirationMonthYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collective bargaining agreement expiration month year</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CollectiveBargainingAgreementExpirationMonthYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Collective Bargaining Agreement Expiration Month Year</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandMember" xlink:type="locator" xlink:label="us-gaap_LandMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandMember" xlink:to="us-gaap_LandMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Land [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfOperatingSegments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of divisions represent operating segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfOperatingSegments" xlink:to="us-gaap_NumberOfOperatingSegments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Operating Segments</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfReportableSegments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reportable business segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Reportable Segments</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:type="locator" xlink:label="us-gaap_CorporateNonSegmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateNonSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateNonSegmentMember" xlink:to="us-gaap_CorporateNonSegmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateNonSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Corporate Non Segment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GrossProfit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gross profit</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings (Loss) from operations</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gains on sales of investment land</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCostsAndAssetImpairmentCharges" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestructuringCostsAndAssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset and portfolio rationalization charge</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCostsAndAssetImpairmentCharges" xlink:to="us-gaap_RestructuringCostsAndAssetImpairmentCharges_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestructuringCostsAndAssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restructuring Costs And Asset Impairment Charges</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets employed</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total property additions, including the impact of acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAdditions" xlink:to="us-gaap_PropertyPlantAndEquipmentAdditions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Additions</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions" xlink:type="locator" xlink:label="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions" />
    <link:label xml:lang="en-US" xlink:label="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Property, plant and equipment, additions through acquisitions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions" xlink:to="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property additions through acquisitions</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_PropertyPlantAndEquipmentAdditionsThroughAcquisitions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Additions Through Acquisitions</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfProductInformationTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfProductInformationTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfProductInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Product Information [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfProductInformationTable" xlink:to="us-gaap_ScheduleOfProductInformationTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfProductInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Product Information [Table]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AggregatesMember" xlink:type="locator" xlink:label="mlm_AggregatesMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_AggregatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Aggregates.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AggregatesMember" xlink:to="mlm_AggregatesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_AggregatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregates</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AggregatesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Aggregates [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CementMember" xlink:type="locator" xlink:label="mlm_CementMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_CementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CementMember" xlink:to="mlm_CementMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_CementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cement</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cement [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ReadyMixedConcreteMember" xlink:type="locator" xlink:label="mlm_ReadyMixedConcreteMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ReadyMixedConcreteMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Ready mixed concrete.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ReadyMixedConcreteMember" xlink:to="mlm_ReadyMixedConcreteMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ReadyMixedConcreteMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ready Mixed Concrete</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ReadyMixedConcreteMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Ready Mixed Concrete [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AsphaltAndPavingMember" xlink:type="locator" xlink:label="mlm_AsphaltAndPavingMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_AsphaltAndPavingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Asphalt and paving.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AsphaltAndPavingMember" xlink:to="mlm_AsphaltAndPavingMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_AsphaltAndPavingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asphalt and Paving</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AsphaltAndPavingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Asphalt And Paving [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsegmentsConsolidationItemsAxis" xlink:type="locator" xlink:label="us-gaap_SubsegmentsConsolidationItemsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsegments Consolidation Items</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsegmentsConsolidationItemsAxis" xlink:to="us-gaap_SubsegmentsConsolidationItemsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsegments Consolidation Items [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsegmentsConsolidationItemsDomain" xlink:type="locator" xlink:label="us-gaap_SubsegmentsConsolidationItemsDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsegments Consolidation Items</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsegmentsConsolidationItemsDomain" xlink:to="us-gaap_SubsegmentsConsolidationItemsDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsegmentsConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsegments Consolidation Items [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReportableSubsegmentsMember" xlink:type="locator" xlink:label="us-gaap_ReportableSubsegmentsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReportableSubsegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reportable Subsegments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReportableSubsegmentsMember" xlink:to="us-gaap_ReportableSubsegmentsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReportableSubsegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reportable Subsegments [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntersubsegmentEliminationsMember" xlink:type="locator" xlink:label="us-gaap_IntersubsegmentEliminationsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntersubsegmentEliminationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interproduct Revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntersubsegmentEliminationsMember" xlink:to="us-gaap_IntersubsegmentEliminationsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntersubsegmentEliminationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Intersubsegment Eliminations [Member]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductInformationLineItems" xlink:type="locator" xlink:label="us-gaap_ProductInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProductInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductInformationLineItems" xlink:to="us-gaap_ProductInformationLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProductInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Product Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GrossProfit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross profit (loss)</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_DomesticMember" xlink:type="locator" xlink:label="mlm_DomesticMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_DomesticMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Domestic.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_DomesticMember" xlink:to="mlm_DomesticMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_DomesticMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Domestic</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_DomesticMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Domestic [Member]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ForeignMember" xlink:type="locator" xlink:label="mlm_ForeignMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_ForeignMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Foreign.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ForeignMember" xlink:to="mlm_ForeignMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ForeignMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ForeignMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Foreign [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveVerboseLabel">Consolidated total revenues</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_RemeasurementOfOperatingLeaseRightOfUseAssets" xlink:type="locator" xlink:label="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets" />
    <link:label xml:lang="en-US" xlink:label="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Remeasurement of operating lease right of use assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets" xlink:to="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:type="locator" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued liabilities for purchases of property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:to="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capital Expenditures Incurred But Not Yet Paid</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remeasurement of operating lease right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_RemeasurementOfOperatingLeaseRightOfUseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Remeasurement Of Operating Lease Right Of Use Assets</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use assets obtained in exchange for new operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset Obtained In Exchange For Operating Lease Liability</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability" xlink:type="locator" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use assets obtained in exchange for new finance lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability" xlink:to="us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset Obtained In Exchange For Finance Lease Liability</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1" xlink:type="locator" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition of assets through asset exchange</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncash Or Part Noncash Acquisition Fixed Assets Acquired1</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities" xlink:type="locator" xlink:label="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities" />
    <link:label xml:lang="en-US" xlink:label="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid for amount included in measurement of lease liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities" xlink:to="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities_lbl" />
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPaidNet" xlink:type="locator" xlink:label="us-gaap_InterestPaidNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for interest, net of amount capitalized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid Net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:type="locator" xlink:label="us-gaap_IncomeTaxesPaidNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Paid Net</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for amounts included in the measurement of lease liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_CashPaidForAmountIncludedInMeasurementOfLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid For Amount Included In Measurement Of Lease Liabilities</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:type="locator" xlink:label="us-gaap_OperatingLeasePayments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows used for operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Payments</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows used for finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:to="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Interest Payment On Liability</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeasePrincipalPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing cash flows used for finance leases</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromPolicyLoans" xlink:type="locator" xlink:label="us-gaap_PaymentsForProceedsFromPolicyLoans" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsForProceedsFromPolicyLoans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayment of loans related to life insurance policies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForProceedsFromPolicyLoans" xlink:to="us-gaap_PaymentsForProceedsFromPolicyLoans_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsForProceedsFromPolicyLoans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments For Proceeds From Policy Loans</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems" xlink:type="locator" xlink:label="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems" />
    <link:label xml:lang="en-US" xlink:label="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Component of other operating income and expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems" xlink:to="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OtherOperatingIncomeAndExpenseTable" xlink:type="locator" xlink:label="mlm_OtherOperatingIncomeAndExpenseTable" />
    <link:label xml:lang="en-US" xlink:label="mlm_OtherOperatingIncomeAndExpenseTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Other operating income and expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OtherOperatingIncomeAndExpenseTable" xlink:to="mlm_OtherOperatingIncomeAndExpenseTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_OtherOperatingIncomeAndExpenseTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Operating Income And Expense [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OtherOperatingIncomeAndExpenseTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Operating Income And Expense [Table]</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_AustinTexasAndRiversideCaliforniaMember" xlink:type="locator" xlink:label="mlm_AustinTexasAndRiversideCaliforniaMember" />
    <link:label xml:lang="en-US" xlink:label="mlm_AustinTexasAndRiversideCaliforniaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Austin, Texas and Riverside, California.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_AustinTexasAndRiversideCaliforniaMember" xlink:to="mlm_AustinTexasAndRiversideCaliforniaMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_AustinTexasAndRiversideCaliforniaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Austin, Texas and Riverside, California</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_AustinTexasAndRiversideCaliforniaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Austin Texas And Riverside California [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Component of Other Operating Income and Expense [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ComponentOfOtherOperatingIncomeAndExpenseLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Component Of Other Operating Income And Expense [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other operating income and expenses, net</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net cash proceeds from asset sales</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Property Plant And Equipment</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestructuringCostsAndAssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Asset and portfolio rationalization charge</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:type="locator" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) related to litigation settlement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossRelatedToLitigationSettlement" xlink:to="us-gaap_GainLossRelatedToLitigationSettlement_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss Related To Litigation Settlement</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnSaleOfProperties" xlink:type="locator" xlink:label="us-gaap_GainLossOnSaleOfProperties" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) on sale of properties</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfProperties" xlink:to="us-gaap_GainLossOnSaleOfProperties_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss On Sale Of Properties</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions" xlink:type="locator" xlink:label="us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reversal of accruals for sales tax and unclaimed property contingencies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions" xlink:to="us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tax Adjustments Settlements And Unusual Provisions</link:label>
    <link:loc xlink:href="mlm-20211231.xsd#mlm_ThirdPartyRailroadTrackMaintenanceExpenses" xlink:type="locator" xlink:label="mlm_ThirdPartyRailroadTrackMaintenanceExpenses" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThirdPartyRailroadTrackMaintenanceExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Third-party railroad track maintenance expenses.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_ThirdPartyRailroadTrackMaintenanceExpenses" xlink:to="mlm_ThirdPartyRailroadTrackMaintenanceExpenses_lbl" />
    <link:loc xlink:href="mlm-20211231.xsd#mlm_OutOfPeriodExpensesNetOfTax" xlink:type="locator" xlink:label="mlm_OutOfPeriodExpensesNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpensesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Out of period expenses net of tax.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mlm_OutOfPeriodExpensesNetOfTax" xlink:to="mlm_OutOfPeriodExpensesNetOfTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="mlm_ThirdPartyRailroadTrackMaintenanceExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Third-party railroad track maintenance expense</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_ThirdPartyRailroadTrackMaintenanceExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Third Party Railroad Track Maintenance Expenses</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent" xlink:type="locator" xlink:label="us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reduction in pension expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent" xlink:to="us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpensesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Out of period expense net of tax</link:label>
    <link:label xml:lang="en-US" xlink:label="mlm_OutOfPeriodExpensesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Out Of Period Expenses Net Of Tax</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureTable" />
    <link:label xml:lang="en-US" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation And Qualifying Accounts Disclosure [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="srt_ValuationAndQualifyingAccountsDisclosureTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Valuation And Qualifying Accounts Disclosure [Table]</link:label>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-09, Valuation Allowances and Reserves Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Allowances And Reserves Type [Axis]</link:label>
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