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Document and Entity Information - USD ($)	9 Months Ended
Document and Entity Information - USD ($)	Sep. 30, 2010	Oct. 28, 2010	Sep. 30, 2009
Document and Entity Information [Abstract]
Entity Registrant Name	MARTIN MARIETTA MATERIALS INC
Entity Central Index Key	0000916076
Document Type	10-Q
Document Period End Date	Sep. 30, 2010
Amendment Flag	false
Document Fiscal Year Focus	2010
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,070,942,497
Entity Common Stock, Shares Outstanding		45,528,566

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2010	Dec. 31, 2009	Sep. 30, 2009
Current Assets:
Cash and cash equivalents	$ 60,499	$ 263,591	$ 193,835
Accounts receivable, net	249,613	162,815	241,520
Inventories, net	323,820	332,569	329,781
Current deferred income tax benefits	71,593	60,303	58,272
Other current assets	26,591	37,582	21,558
Total Current Assets	732,116	856,860	844,966
Property, plant and equipment	3,541,058	3,465,978	3,436,078
Allowances for depreciation, depletion and amortization	(1,847,852)	(1,773,073)	(1,737,939)
Net property, plant and equipment	1,693,206	1,692,905	1,698,139
Goodwill	624,224	624,224	624,224
Other intangibles, net	17,563	12,469	12,887
Other noncurrent assets	48,674	52,825	52,465
Total Assets	3,115,783	3,239,283	3,232,681
Current Liabilities:
Bank overdraft		1,737	162
Accounts payable	76,993	52,107	61,741
Accrued salaries, benefits and payroll taxes	14,403	15,222	18,155
Pension and postretirement benefits	16,894	18,823	5,852
Accrued insurance and other taxes	32,409	24,274	34,307
Income taxes			2,469
Current maturities of long-term debt and short-term facilities	245,423	226,119	226,025
Accrued interest	27,231	12,751	27,680
Other current liabilities	13,482	22,520	18,394
Total Current Liabilities	426,835	373,553	394,785
Long-term debt	785,706	1,023,492	1,038,873
Pension, postretirement and postemployment benefits	144,574	160,354	193,249
Noncurrent deferred income taxes	216,844	195,946	175,255
Other noncurrent liabilities	84,596	79,527	78,543
Total Liabilities	1,658,555	1,832,872	1,880,705
Equity:
Common stock, par value $0.01 per share	454	453	446
Preferred stock, par value $0.01 per share	0	0	0
Additional paid-in capital	395,853	381,173	319,777
Accumulated other comprehensive loss	(67,249)	(75,084)	(89,267)
Retained earnings	1,085,750	1,058,698	1,080,084
Total Shareholders' Equity	1,414,808	1,365,240	1,311,040
Noncontrolling interests	42,420	41,171	40,936
Total Equity	1,457,228	1,406,411	1,351,976
Total Liabilities and Equity	$ 3,115,783	$ 3,239,283	$ 3,232,681

Consolidated Statements of Earnings (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2010	Sep. 30, 2009	Sep. 30, 2010	Sep. 30, 2009
Consolidated Statements of Earnings [Abstract]
Net Sales	$ 443,709	$ 428,271	$ 1,182,054	$ 1,168,802
Freight and delivery revenues	65,594	59,696	172,822	159,110
Total revenues	509,303	487,967	1,354,876	1,327,912
Cost of sales	329,914	310,523	930,948	890,801
Freight and delivery costs	65,594	59,696	172,822	159,110
Total cost of revenues	395,508	370,219	1,103,770	1,049,911
Gross Profit	113,795	117,748	251,106	278,001
Selling, general & administrative expenses	31,235	32,932	98,365	106,855
Research and development	114	51	150	350
Other operating (income) and expenses, net	(1,393)	(4,448)	(9,031)	(2,310)
Earnings from Operations	83,839	89,213	161,622	173,106
Interest expense	17,104	18,181	51,540	55,358
Other nonoperating (income) and expenses, net	(545)	(1,196)	189	(1,514)
Earnings from continuing operations before taxes on income	67,280	72,228	109,893	119,262
Income tax expense	13,990	15,308	26,539	28,671
Earnings from Continuing Operations	53,290	56,920	83,354	90,591
(Loss) Gain on discontinued operations, net of related tax expense of $34, $37, $88 and $271, respectively	(34)	(52)	101	488
Consolidated net earnings	53,256	56,868	83,455	91,079
Less: Net earnings attributable to noncontrolling interests	1,266	1,354	1,246	2,467
Net Earnings Attributable to Martin Marietta Materials, Inc.	51,990	55,514	82,209	88,612
Net Earnings Attributable to Martin Marietta Materials, Inc.
Earnings from continuing operations	52,024	55,566	82,108	88,124
(Loss) Earnings from discontinued operations	(34)	(52)	101	488
Net Earnings Attributable to Martin Marietta Materials, Inc.	$ 51,990	$ 55,514	$ 82,209	$ 88,612
Net Earnings Attributable to Martin Marietta Materials, Inc. Per Common Share
Basic from continuing operations attributable to common shareholders	$ 1.13	$ 1.23	$ 1.79	$ 1.99
Discontinued operations attributable to common shareholders				0.01
Basic Net Earnings attributable to common shareholders	1.13	1.23	1.79	2
Diluted from continuing operations attributable to common shareholders	1.13	1.23	1.78	1.98
Discontinued operations attributable to common shareholders				0.01
Diluted Net Earnings attributable to common shareholders	$ 1.13	$ 1.23	$ 1.78	$ 1.99
Weighted-Average Common Shares Outstanding
Basic	45,526	44,622	45,463	43,690
Diluted	45,678	44,813	45,639	43,879
Cash Dividends Per Common Share	$ 0.4	$ 0.4	$ 1.2	$ 1.2

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2009	Sep. 30, 2010	Sep. 30, 2009
Cash Flows from Operating Activities:
Consolidated net earnings	$ 56,868	$ 83,455	$ 91,079
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization		135,946	133,276
Stock-based compensation expense		11,684	17,084
(Gains) Losses on divestitures and sales of assets		(4,293)	2,045
Deferred income taxes		17,131	(1,851)
Excess tax benefits from stock-based compensation transactions		(1,643)	(1,956)
Other items, net		704	(2,165)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net		(86,798)	(30,291)
Inventories, net		8,888	(9,738)
Accounts payable		24,898	(982)
Other assets and liabilities, net		12,639	38,097
Net Cash Provided by Operating Activities		202,611	234,598
Cash Flows from Investing Activities:
Additions to property, plant and equipment		(110,024)	(100,493)
Acquisitions, net		(28,107)	(49,574)
Proceeds from divestitures and sales of assets		4,524	7,375
Railcar construction advances		(8,997)
Repayments of railcar construction advances		8,997
Loan to affiliate			(4,000)
Net Cash Used for Investing Activities		(133,607)	(146,692)
Cash Flows from Financing Activities:
Borrowings of long-term debt		150,000	280,000
Repayments of long-term debt		(369,229)	(167,577)
Repayments on short-term facilities, net			(200,000)
Debt issuance costs		(80)	(2,285)
Change in bank overdraft		(1,737)	(4,515)
Payments on capital lease obligations		(308)	(110)
Dividends paid		(55,157)	(52,945)
Distributions to owners of noncontrolling interests			(2,561)
Purchase of subsidiary shares from noncontrolling interest			(17,060)
Issuances of common stock		2,772	233,232
Excess tax benefits from stock-based compensation transactions		1,643	1,956
Net Cash (Used for) Provided by Financing Activities		(272,096)	68,135
Net (Decrease) Increase in Cash and Cash Equivalents		(203,092)	156,041
Cash and Cash Equivalents, beginning of period		263,591	37,794
Cash and Cash Equivalents, end of period	193,835	60,499	193,835
Noncash Investing and Financing Activities:
Issuance of notes payable for acquisition of land		450	125
Notes receivable issued in connection with divestiture and sales of assets	$ 1,675		1,675
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest		36,073	39,503
Cash payments for income taxes		$ 3,732	$ 8,101

Consolidated Statement of Total Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2010	Sep. 30, 2010
Statement [Line Items]
Beginning Balance		$ 1,406,411
Consolidated net earnings	$ 53,256	83,455
Unrecognized actuarial losses and prior service costs related to pension and postretirement benefits, net of tax benefit of $714		7,149
Foreign currency translation gain		286
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax benefit of $264		403
Consolidated comprehensive earnings		91,293
Dividends declared		(55,157)
Issuances of common stock for stock award plans		2,997
Stock-based compensation expense		11,684
Ending Balance	1,457,228	1,457,228
Common Stock
Statement [Line Items]
Beginning Balance		$ 453
Beginning Balance, Shares		45,399
Issuances of common stock for stock award plans		$ 1
Issuances of common stock for stock award plans, shares		130
Ending Balance	$ 454	$ 454
Ending Balance, Shares	45,529	45,529
Additional Paid-in Capital
Statement [Line Items]
Beginning Balance		$ 381,173
Issuances of common stock for stock award plans		2,996
Stock-based compensation expense		11,684
Ending Balance	$ 395,853	395,853
Accumulated Other Comprehensive Loss
Statement [Line Items]
Beginning Balance		(75,084)
Unrecognized actuarial losses and prior service costs related to pension and postretirement benefits, net of tax benefit of $714		7,146
Foreign currency translation gain		286
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax benefit of $264		403
Ending Balance	(67,249)	(67,249)
Retained Earnings
Statement [Line Items]
Beginning Balance		1,058,698
Consolidated net earnings		82,209
Dividends declared		(55,157)
Ending Balance	1,085,750	1,085,750
Total Shareholders' Equity
Statement [Line Items]
Beginning Balance		1,365,240
Consolidated net earnings		82,209
Unrecognized actuarial losses and prior service costs related to pension and postretirement benefits, net of tax benefit of $714		7,146
Foreign currency translation gain		286
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax benefit of $264		403
Consolidated comprehensive earnings		90,044
Dividends declared		(55,157)
Issuances of common stock for stock award plans		2,997
Stock-based compensation expense		11,684
Ending Balance	1,414,808	1,414,808
Noncontrolling Interests
Statement [Line Items]
Beginning Balance		41,171
Consolidated net earnings		1,246
Unrecognized actuarial losses and prior service costs related to pension and postretirement benefits, net of tax benefit of $714		3
Consolidated comprehensive earnings		1,249
Ending Balance	$ 42,420	$ 42,420

Significant Accounting Policies

9 Months Ended

Sep. 30, 2010

Significant Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

		Basis of Presentation

		The accompanying unaudited consolidated financial statements of Martin Marietta Materials, Inc. (the “Corporation”) have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and to Article 10 of Regulation S-X. The Corporation has continued to follow the accounting policies set forth in the audited consolidated financial statements and related notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2009, filed with the Securities and Exchange Commission on February 26, 2010. In the opinion of management, the interim financial information provided herein reflects all adjustments, consisting of normal recurring accruals, necessary for a fair presentation of the results of operations, financial position and cash flows for the interim periods. The results of operations for the quarter and nine months ended September 30, 2010 are not indicative of the results expected for other interim periods or the full year. The balance sheet at December 31, 2009 has been derived from the audited financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles (GAAP) for complete financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2009.

		Earnings per Common Share

		The numerator for basic and diluted earnings per common share is net earnings attributable to Martin Marietta Materials, Inc., reduced by dividends and undistributed earnings attributable to the Corporation’s unvested restricted stock awards and incentive stock awards. The denominator for basic earnings per common share is the weighted-average number of common shares outstanding during the period. Diluted earnings per common share are computed assuming that the weighted-average number of common shares is increased by the conversion, using the treasury stock method, of awards to be issued to employees and nonemployee members of the Corporation’s Board of Directors under certain stock-based compensation arrangements if the conversion is dilutive. The diluted per-share computations reflect a change in the number of common shares outstanding (the denominator) to include the number of additional shares that would have been outstanding if the potentially dilutive common shares had been issued.





		The following table reconciles the numerator and denominator for basic and diluted earnings per common share:


	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2010			2009			2010		2009
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	52,024		$	55,566		$	82,108	$	88,124
Less: Distributed and undistributed earnings attributable to unvested awards		529			617			865		1,122

Basic and diluted net earnings from continuing operations attributable to common shareholders of Martin Marietta Materials, Inc.		51,495			54,949			81,243		87,002
Basic and diluted net (loss) earnings from discontinued operations attributable to common shareholders		(34	)		(52	)		101		488

Basic and diluted net earnings attributable to common shareholders of Martin Marietta Materials, Inc.	$	51,461		$	54,897		$	81,344	$	87,490


Basic weighted-average common shares outstanding		45,526			44,622			45,463		43,690
Effect of dilutive employee and director awards		152			191			176		189

Diluted weighted-average common shares outstanding		45,678			44,813			45,639		43,879

		Comprehensive Earnings

		Consolidated comprehensive earnings for the Corporation consist of consolidated net earnings; amortization of actuarial losses and prior service costs related to pension and postretirement benefits; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense. Consolidated comprehensive earnings for the three and nine months ended September 30, 2010 were $55,495,000 and $91,293,000, respectively. For the three and nine months ended September 30, 2009, consolidated comprehensive earnings were $64,097,000 and $103,484,000, respectively.

Long-Term Debt

9 Months Ended

Sep. 30, 2010

Long-Term Debt [Abstract]

Long-Term Debt

Long-Term Debt


	September 30,			December 31,			September 30,
	2010			2009			2009
	(Dollars in Thousands)

6.875% Notes, due 2011	$	242,118		$	242,092		$	242,083
6.6% Senior Notes, due 2018		298,242			298,111			298,068
7% Debentures, due 2025		124,388			124,371			124,366
6.25% Senior Notes, due 2037		247,874			247,851			247,844
Floating Rate Senior Notes, due 2010		—			217,502			217,437
Term Loan, due 2012, interest rate of 3.3% at September 30, 2010		111,750			111,750			126,750
Other notes		6,757			7,934			8,350

Total debt		1,031,129			1,249,611			1,264,898
Less current maturities		(245,423	)		(226,119	)		(226,025	)

Long-term debt	$	785,706		$	1,023,492		$	1,038,873

		In April 2010, the Corporation repaid $217,600,000 of Floating Rate Senior Notes through the use of cash and short-term borrowings.

		At September 30, 2010, the Corporation had $245,423,000 of current maturities of long-term debt, of which $242,118,000 of 6.875% Notes become due April 2011.

		At September 30, 2010, December 31, 2009 and September 30, 2009, the Corporation had no outstanding borrowings under its $100,000,000 AR Credit Facility. Borrowings under the AR Credit Facility are limited based on the balance of the Corporation’s accounts receivable.

		The Corporation’s $325,000,000 five-year revolving credit agreement, $130,000,000 unsecured term loan (the “Term Loan”) and $100,000,000 three-year secured accounts receivable credit facility (the “AR Credit Facility”) are subject to a leverage ratio covenant. The covenant requires the Corporation’s ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve months (the “Ratio”) to not exceed 3.50 to 1.00 as of the end of any fiscal quarter. The covenant requires the inclusion of debt guaranteed by the Corporation in the Ratio calculation. Furthermore, the covenant allows the Corporation to exclude debt incurred in connection with acquisitions from the Ratio for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed the maximum Ratio plus 0.25. Certain other nonrecurring items and noncash items, if they occur, can also be excluded from the Ratio. The Corporation was in compliance with the Ratio at September 30, 2010.

		The Corporation unwound two forward starting interest rate swap agreements with a total notional amount of $150,000,000 (the “Swap Agreements”) in April 2008. The Corporation made a cash payment of $11,139,000, which represented the fair value of the Swap Agreements on the date of termination. The accumulated other comprehensive loss, net of tax, at the date of termination is being recognized in earnings over the life of the 6.6% Senior Notes. For the three and nine months ended September 30, 2010, the Corporation recognized $226,000 and $667,000, respectively, as additional interest expense. For the three and nine months ended September 30, 2009, the Corporation recognized $211,000 and $622,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the Swap Agreements will increase annual interest expense by approximately $1,000,000 until the maturity of the 6.6% Senior Notes in 2018. The accumulated other comprehensive loss related to the Swap Agreements was $5,484,000, net of cumulative noncurrent deferred tax assets of $3,588,000, at September 30, 2010; $5,887,000, net of cumulative noncurrent deferred tax assets of $3,852,000, at December 31, 2009; and $6,017,000, net of cumulative noncurrent deferred tax assets of $3,937,000, at September 30, 2009.

Financial Instruments

9 Months Ended

Sep. 30, 2010

Financial Instruments [Abstract]

Financial Instruments

Financial Instruments

		The Corporation’s financial instruments include temporary cash investments, accounts receivable, notes receivable, bank overdraft, publicly registered long-term notes, debentures and other long-term debt.

		Temporary cash investments are placed primarily in money market funds and Eurodollar time deposits with the following financial institutions: Bank of America, N.A., Branch Banking and Trust Company, JP Morgan Chase Bank, N.A. and Wells Fargo Bank, N.A.. The Corporation’s cash equivalents have maturities of less than three months. Due to the short maturity of these investments, they are carried on the consolidated balance sheets at cost, which approximates fair value.

		Customer receivables are due from a large number of customers, primarily in the construction industry, and are dispersed across wide geographic and economic regions. However, customer receivables are more heavily concentrated in certain states (namely, Texas, North Carolina, Georgia, Iowa and Louisiana which accounted for approximately 56% of the Aggregate business’ 2009 net sales). The estimated fair values of customer receivables approximate their carrying amounts.

		Notes receivable are primarily related to divestitures and are not publicly traded. However, using current market interest rates, but excluding adjustments for credit worthiness, if any, management estimates that the fair value of notes receivable approximates the carrying amount.

		The bank overdraft represents the float of outstanding checks. The estimated fair value of the bank overdraft approximates its carrying value.

		The estimated fair value of the Corporation’s publicly registered long-term notes and debentures at September 30, 2010 was $980,791,000, compared with a carrying amount of $912,622,000 on the consolidated balance sheet. The fair value of this long-term debt was estimated based on quoted market prices. The estimated fair value of other borrowings, including the Corporation’s Term Loan, was $118,507,000 at September 30, 2010 and approximates its carrying amount.

		The carrying values and fair values of the Corporation’s financial instruments are as follows (dollars in thousands):


	September 30, 2010				December 31, 2009				September 30, 2009
	Carrying				Carrying				Carrying
	Value		Fair Value		Value		Fair Value		Value		Fair Value

Cash and cash equivalents	$	60,499	$	60,499	$	263,591	$	263,591	$	193,835	$	193,835
Accounts receivable, net	$	249,613	$	249,613	$	162,815	$	162,815	$	241,520	$	241,520
Notes receivable, net	$	10,889	$	10,889	$	13,415	$	13,415	$	13,458	$	13,458
Bank overdraft	$	—	$	—	$	1,737	$	1,737	$	162	$	162
Long-term debt	$	1,031,129	$	1,099,298	$	1,249,611	$	1,245,068	$	1,264,898	$	1,249,621

Income Taxes

9 Months Ended

Sep. 30, 2010

Income Taxes [Abstract]

Income Taxes

Income Taxes

Income tax expense reported in the Corporation’s consolidated statements of earnings includes income tax expense on earnings attributable to both the Corporation and its noncontrolling interests.


	Nine Months Ended
	September 30,
	2010			2009
Estimated effective income tax rate:
Continuing operations		24.1	%		24.0	%

Discontinued operations		46.6	%		35.7	%

Consolidated Overall		24.2	%		24.1	%

		The Corporation’s effective income tax rate reflects the effect of federal and state income taxes and the impact of differences in book and tax accounting arising from the net permanent benefits associated with the depletion allowances for mineral reserves and the domestic production deduction. The effective income tax rates for discontinued operations reflect the tax effects of individual operations’ transactions and are not indicative of the Corporation’s overall effective income tax rate.

		On March 23, 2010, the Patient Protection and Affordable Care Act (PPACA) was signed into law. Among other things, the PPACA reduces the tax benefits available to an employer that receives the Medicare Part D subsidy. Employers that receive the Medicare Part D subsidy recognize the deferred tax effects of the reduced deductibility of the postretirement prescription drug coverage in continuing operations in the period of enactment. The effects of changes in tax law are recognized as discrete events in the period of enactment. Accordingly, the overall estimated effective income tax rate for the nine months ended September 30, 2010 includes the effect to the Corporation of the PPACA.

		The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2010, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2010, increased consolidated net earnings for the nine months ended September 30, 2010 by $5,724,000, or $0.13 per diluted share. The overall estimated effective income tax rate for the nine months ended September 30, 2010 included the effective settlement of issues related to the 2004 and 2005 tax years, the effective settlement of the Internal Revenue Service audit for the 2007 tax year, the expiration of the statute of limitations for federal examination of the 2006 tax year, the provision of a valuation allowance for unused tax credits, and the true-up of the 2009 provision estimates to actual taxes paid as a result of filing the related tax returns during the period.

		The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2009, when compared with the year-to-date consolidated overall effective tax rate as of June 30, 2009, increased consolidated net earnings for the nine months ended September 30, 2009 by $5,161,000, or $0.12 per diluted share. The overall estimated effective income tax rate for the nine months ended September 30, 2009 included the true-up of the 2008 provision estimates to actual taxes paid as a result of filing the related tax returns during the period.

		The following table summarizes changes in the Corporation’s unrecognized tax benefits, excluding interest and correlative effects, for the nine months ended September 30, 2010 (dollars in thousands):


Unrecognized tax benefits at beginning of period	$	16,722
Gross increases — tax positions in prior years		18,545
Gross decreases — tax positions in prior years		(3,107	)
Gross increases — tax positions in current year		1,172
Settlements with taxing authorities		(684	)
Lapse of statute of limitations		(10,401	)

Unrecognized tax benefits at end of period	$	22,247

		At September 30, 2010, unrecognized tax benefits of $4,372,000, net of federal tax benefits and related to interest accruals and permanent income tax differences, would have favorably affected the Corporation’s effective tax rate if recognized.

		The Corporation anticipates that it is reasonably possible that $10,213,000 of unrecognized tax benefits may change during the twelve months ending September 30, 2011 as a result of filing a change in accounting method for the 2010 tax year.

Business Segments

9 Months Ended

Sep. 30, 2010

Business Segments [Abstract]

Business Segments

10.

Business Segments

		The Corporation conducts its aggregates operations through three reportable business segments: Mideast Group, Southeast Group and West Group. The Corporation also has a Specialty Products segment that includes magnesia-based chemicals products and dolomitic lime.

		The following tables display selected financial data for continuing operations for the Corporation’s reportable business segments. Corporate loss from operations primarily includes depreciation on capitalized interest, expenses for corporate administrative functions, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.


	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2010			2009			2010			2009
	(Dollars in Thousands)
Total revenues:
Mideast Group	$	144,688		$	139,741		$	375,726		$	358,474
Southeast Group		115,672			108,162			313,209			333,519
West Group		202,841			196,044			521,277			518,001

Total Aggregates Business		463,201			443,947			1,210,212			1,209,994
Specialty Products		46,102			44,020			144,664			117,918

Total	$	509,303		$	487,967		$	1,354,876		$	1,327,912


Net sales:
Mideast Group	$	133,607		$	131,176		$	348,524		$	337,554
Southeast Group		91,216			87,938			251,440			275,392
West Group		176,623			169,571			450,212			449,872

Total Aggregates Business		401,446			388,685			1,050,176			1,062,818
Specialty Products		42,263			39,586			131,878			105,984

Total	$	443,709		$	428,271		$	1,182,054		$	1,168,802


Earnings (Loss) from operations:
Mideast Group	$	38,741		$	40,067		$	80,296		$	79,247
Southeast Group		1,414			4,812			(144	)		22,977
West Group		33,941			36,207			54,654			65,830

Total Aggregates Business		74,096			81,086			134,806			168,054
Specialty Products		12,043			11,947			40,067			26,108
Corporate		(2,300	)		(3,820	)		(13,251	)		(21,056	)

Total	$	83,839		$	89,213		$	161,622		$	173,106

The asphalt, ready mixed concrete, road paving and other product lines are considered internal customers of the core aggregates business. Product lines for the Specialty Products segment consist of magnesia-based chemicals, dolomitic lime and other. Net sales by product line are as follows:


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2010		2009		2010		2009
	(Dollars in Thousands)

Aggregates	$	376,554	$	364,774	$	986,038	$	992,088
Asphalt		9,833		12,041		29,014		34,988
Ready Mixed Concrete		7,056		6,194		19,558		21,301
Road Paving		6,575		4,349		12,602		10,550
Other		1,428		1,327		2,964		3,891

Total Aggregates Business		401,446		388,685		1,050,176		1,062,818

Magnesia-Based Chemicals		29,290		26,238		89,287		73,757
Dolomitic Lime		12,457		12,761		41,386		30,918
Other		516		587		1,205		1,309

Specialty Products		42,263		39,586		131,878		105,984

Total	$	443,709	$	428,271	$	1,182,054	$	1,168,802

Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2010	Dec. 31, 2009	Sep. 30, 2009
Equity:
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01

Consolidated Statement of Total Equity (Unaudited) (Parenthetical) $ in Thousands	9 Months Ended
	Sep. 30, 2010 USD ($)
Statement [Line Items]
Tax benefit on unrecognized actuarial losses and prior service costs related to pension and postretirement benefits	$ 714
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	264
Total Shareholders' Equity
Statement [Line Items]
Tax benefit on unrecognized actuarial losses and prior service costs related to pension and postretirement benefits	714
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	264
Accumulated Other Comprehensive Loss
Statement [Line Items]
Tax benefit on unrecognized actuarial losses and prior service costs related to pension and postretirement benefits	714
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	$ 264