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  <xsd:element id="mlm_NumberOfDaysRestrictedFromUtilizingCash" name="NumberOfDaysRestrictedFromUtilizingCash" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_BuildingMaterialsBusinessMember" name="BuildingMaterialsBusinessMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_CaliforniaAndColoradoMember" name="CaliforniaAndColoradoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets" name="DisposalGroupIncludingDiscontinuedOperationLeaseRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember" name="ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember" name="FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_RevenuesAndGrossProfitAbstract" name="RevenuesAndGrossProfitAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_TillerCorporationMember" name="TillerCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_AccruedOtherTaxesCurrent" name="AccruedOtherTaxesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="mlm_PolicyElectionsPolicyTextBlock" name="PolicyElectionsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_LiborMember" name="LiborMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_ReadyMixedConcreteMember" name="ReadyMixedConcreteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_LehighHansonIncorporationWestRegionMember" name="LehighHansonIncorporationWestRegionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_ColoradoAndCentralTexasMember" name="ColoradoAndCentralTexasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_NumberOfCementPlants" name="NumberOfCementPlants" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_AggregatesMember" name="AggregatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_CashUsedForOperatingAndInvestingActivitiesForDiscontinuedOperations" name="CashUsedForOperatingAndInvestingActivitiesForDiscontinuedOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="mlm_RevenuesAndGrossProfitTextBlock" name="RevenuesAndGrossProfitTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_IncludingAcquisitionBridgeDebtMember" name="IncludingAcquisitionBridgeDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_AffiliateLineOfCreditFacilityMaturityPeriod" name="AffiliateLineOfCreditFacilityMaturityPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember" name="TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="mlm_BasisOfPresentationAndUseOfEstimatesPolicyTextBlock" name="BasisOfPresentationAndUseOfEstimatesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="mlm_BusinessCombinationAcquisitionAndIntegrationRelatedCosts" name="BusinessCombinationAcquisitionAndIntegrationRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="mlm_ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock" name="ScheduleOfEntityWideRevenueAndGrossProfitFromExternalCustomersByProductsAndServicesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
