10-Q

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2014

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 1-12744

MARTIN MARIETTA MATERIALS, INC.

(Exact name of registrant as specified in its charter)

North Carolina	56-1848578
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

2710 Wycliff Road, Raleigh, NC	27607-3033
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code 919-781-4550

Former name:	None
	Former name, former address and former fiscal year, if changes since last report.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

Indicate the number of shares outstanding of each of the issuer’s classes of Common Stock, as of the latest practicable date.

Class	Outstanding as of July 25, 2014
Common Stock, $0.01 par value	66,918,724

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

	Page
Part I. Financial Information:
Item 1. Financial Statements.
Consolidated Balance Sheets – June 30, 2014, December 31, 2013 and June 30, 2013		3
Consolidated Statements of Earnings and Comprehensive Earnings - Three and Six Months Ended June  30, 2014 and 2013		4
Consolidated Statements of Cash Flows - Six Months Ended June 30, 2014 and 2013		5
Consolidated Statement of Total Equity - Six Months Ended June 30, 2014		6
Notes to Consolidated Financial Statements		7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.		29
Item 3. Quantitative and Qualitative Disclosures About Market Risk.		57
Item 4. Controls and Procedures.		58
Part II. Other Information:		59
Item 1. Legal Proceedings.		59
Item 1A. Risk Factors.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.		59
Item 4. Mine Safety Disclosures.		59
Item 6. Exhibits.		60
Signatures		61
Exhibit Index		62

Page 2 of 62

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

	June 30,			December 31,			June 30,
	2014			2013			2013
	(Unaudited)			(Audited)			(Unaudited)
	(Dollars in Thousands, Except Per Share Data)
ASSETS
Current Assets:
Cash and cash equivalents	$	34,329		$	42,437		$	43,712
Accounts receivable, net		343,784			245,421			287,521
Inventories, net		348,168			347,307			348,873
Current deferred income tax benefits		72,413			74,821			79,104
Other current assets		78,007			45,380			47,275
Total Current Assets		876,701			755,366			806,485
Property, plant and equipment		3,970,472			3,976,884			3,843,806
Allowances for depreciation, depletion and amortization		(2,195,098	)		(2,177,643	)		(2,126,420	)
Net property, plant and equipment		1,775,374			1,799,241			1,717,386
Goodwill		616,621			616,621			616,303
Other intangibles, net		46,896			48,591			48,668
Other noncurrent assets		40,451			40,007			42,277
Total Assets	$	3,356,043		$	3,259,826		$	3,231,119
LIABILITIES AND EQUITY
Current Liabilities:
Bank overdraft	$	—		$	2,556		$	—
Accounts payable		139,442			103,600			99,960
Accrued salaries, benefits and payroll taxes		17,393			18,114			16,259
Pension and postretirement benefits		2,356			2,026			4,616
Accrued insurance and other taxes		33,014			29,103			30,679
Current maturities of long-term debt and short-term facilities		12,404			12,403			6,169
Accrued interest		7,386			7,349			7,709
Other current liabilities		32,730			35,398			27,141
Total Current Liabilities		244,725			210,549			192,533
Long-term debt		1,072,397			1,018,518			1,087,150
Pension, postretirement and postemployment benefits		82,662			78,489			184,849
Noncurrent deferred income taxes		275,279			279,999			235,505
Other noncurrent liabilities		113,981			97,352			90,415
Total Liabilities		1,789,044			1,684,907			1,790,452
Equity:
Common stock, par value $0.01 per share		463			461			461
Preferred stock, par value $0.01 per share		—			—			—
Additional paid-in capital		456,989			432,792			429,936
Accumulated other comprehensive loss		(42,141	)		(44,114	)		(106,257	)
Retained earnings		1,149,388			1,148,738			1,077,998
Total Shareholders’ Equity		1,564,699			1,537,877			1,402,138
Noncontrolling interests		2,300			37,042			38,529
Total Equity		1,566,999			1,574,919			1,440,667
Total Liabilities and Equity	$	3,356,043		$	3,259,826		$	3,231,119

See accompanying notes to consolidated financial statements.

Page 3 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE EARNINGS

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(In Thousands, Except Per Share Data) (Unaudited)
Net Sales	$	601,937		$	507,332		$	981,615		$	851,390
Freight and delivery revenues		67,288			53,994			116,240			93,844
Total revenues		669,225			561,326			1,097,855			945,234
Cost of sales		466,335			400,336			820,177			731,573
Freight and delivery costs		67,288			53,994			116,240			93,844
Total cost of revenues		533,623			454,330			936,417			825,417
Gross Profit		135,602			106,996			161,438			119,817
Selling, general & administrative expenses		36,566			37,843			70,813			75,492
Business development expenses		3,338			275			12,850			582
Acquisition integration expenses		1,942			—			2,210			—
Other operating income, net		(2,485	)		(757	)		(4,779	)		(2,571	)
Earnings from Operations		96,241			69,635			80,344			46,314
Interest expense		12,947			13,619			25,149			27,115
Other nonoperating (income) and expenses, net		(292	)		(544	)		3,171			78
Earnings from continuing operations before taxes on income		83,586			56,560			52,024			19,121
Income tax expense		23,906			15,098			15,482			6,700
Earnings from Continuing Operations		59,680			41,462			36,542			12,421
(Loss) Gain on discontinued operations, net of related tax (benefit) expense of ($24), $11, ($25) and ($65), respectively		(56	)		105			(70	)		(183	)
Consolidated net earnings		59,624			41,567			36,472			12,238
Less: Net earnings (loss) attributable to noncontrolling interests		103			259			(1,432	)		(1,230	)
Net Earnings Attributable to Martin Marietta Materials, Inc.	$	59,521		$	41,308		$	37,904		$	13,468
Net Earnings Attributable to Martin Marietta Materials, Inc.:
Earnings from continuing operations	$	59,577		$	41,203		$	37,974		$	13,651
(Loss) Earnings from discontinued operations		(56	)		105			(70	)		(183	)
	$	59,521		$	41,308		$	37,904		$	13,468
Consolidated Comprehensive Earnings: (See Note 1)
Earnings attributable to Martin Marietta Materials, Inc.	$	60,124		$	39,999		$	39,877		$	13,380
Earnings (Loss) attributable to noncontrolling interests		104			262			(1,430	)		(1,225	)
	$	60,228		$	40,261		$	38,447		$	12,155
Net Earnings Attributable to Martin Marietta Materials, Inc.
Per Common Share:
Basic from continuing operations attributable to common shareholders	$	1.28		$	0.89		$	0.81		$	0.29
Discontinued operations attributable to common shareholders		—			—			—			—
	$	1.28		$	0.89		$	0.81		$	0.29
Diluted from continuing operations attributable to common shareholders	$	1.27		$	0.89		$	0.81		$	0.29
Discontinued operations attributable to common shareholders		—			—			—			—
	$	1.27		$	0.89		$	0.81		$	0.29
Weighted-Average Common Shares Outstanding:
Basic		46,395			46,129			46,355			46,079
Diluted		46,529			46,260			46,477			46,217
Cash Dividends Per Common Share	$	0.40		$	0.40		$	0.80		$	0.80

See accompanying notes to consolidated financial statements.

Page 4 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended
	June 30,
	2014			2013
	(Dollars in Thousands) (Unaudited)
Cash Flows from Operating Activities:
Consolidated net earnings	$	36,472		$	12,238
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization		86,147			85,992
Stock-based compensation expense		4,370			3,981
Gains on divestitures and sales of assets		(1,747	)		(422	)
Deferred income taxes		(6,433	)		9,282
Excess tax benefits from stock-based compensation transactions		(1,922	)		(2,253	)
Other items, net		3,227			(530	)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net		(98,911	)		(65,165	)
Inventories, net		(4,269	)		(15,838	)
Accounts payable		35,842			16,423
Other assets and liabilities, net		17,587			4,764
Net Cash Provided by Operating Activities		70,363			48,472
Cash Flows from Investing Activities:
Additions to property, plant and equipment		(84,737	)		(50,002	)
Acquisitions, net		(117	)		(3,246	)
Proceeds from divestitures and sales of assets		2,154			1,874
Repayments from affiliate		529			—
Payment of railcar construction advances		(14,513	)		—
Reimbursement of railcar construction advances		14,513			—
Net Cash Used for Investing Activities		(82,171	)		(51,374	)
Cash Flows from Financing Activities:
Borrowings of long-term debt		100,000			295,500
Repayments of long-term debt		(46,417	)		(250,167	)
Payments on capital lease obligations		(1,052	)		—
Debt issuance costs		(881	)		(510	)
Change in bank overdraft		(2,556	)		—
Dividends paid		(37,254	)		(37,068	)
Purchase of remaining interest in existing subsidiaries		(19,604	)		—
Issuances of common stock		9,542			11,212
Excess tax benefits from stock-based compensation transactions		1,922			2,253
Net Cash Provided by Financing Activities		3,700			21,220
Net (Decrease) Increase in Cash and Cash Equivalents		(8,108	)		18,318
Cash and Cash Equivalents, beginning of period		42,437			25,394
Cash and Cash Equivalents, end of period	$	34,329		$	43,712
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	25,173		$	25,868
Cash paid (received) for income taxes	$	3,511		$	(6,103	)

See accompanying notes to consolidated financial statements.

Page 5 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENT OF TOTAL EQUITY

(Unaudited)

	Shares of												Total
	Common		Common		Additional		Accumulated Other			Retained			Shareholders’			Noncontrolling			Total
(in thousands)	Stock		Stock		Paid-in Capital		Comprehensive Loss			Earnings			Equity			Interests			Equity
Balance at December 31, 2013		46,261	$	461	$	432,792	$	(44,114	)	$	1,148,738		$	1,537,877		$	37,042		$	1,574,919
Consolidated net earnings		—		—		—		—			37,904			37,904			(1,432	)		36,472
Other comprehensive earnings		—		—		—		1,973			—			1,973			2			1,975
Dividends declared		—		—		—		—			(37,254	)		(37,254	)		—			(37,254	)
Issuances of common stock for stock award plans		134		2		11,428		—			—			11,430			—			11,430
Stock-based compensation expense		—		—		4,370		—			—			4,370			—			4,370
Purchase of subsidiary shares from noncontrolling interest		—		—		8,399		—			—			8,399			(33,312	)		(24,913	)
Balance at June 30, 2014		46,395	$	463	$	456,989	$	(42,141	)	$	1,149,388		$	1,564,699		$	2,300		$	1,566,999

See accompanying notes to consolidated financial statements.

Page 6 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Significant Accounting Policies

Organization

Martin Marietta Materials, Inc., (the “Corporation”) is engaged principally in the construction aggregates business. The Corporation’s aggregates product line accounted for 69% of consolidated 2013 net sales and includes crushed stone, sand and gravel, and is used for construction of highways and other infrastructure projects, and in the nonresidential and residential construction industries. Aggregates products are also used in the railroad, agricultural, utility and environmental industries. These aggregates products, along with the Corporation’s vertically-integrated operations, which include asphalt products, ready mixed concrete and road paving construction services (and which accounted for 19% of consolidated 2013 net sales), are sold and shipped from a network of nearly 300 quarries, distribution facilities and plants to customers in 30 states, Canada, the Bahamas and the Caribbean Islands. The aggregates and vertically-integrated operations are reported collectively as the Corporation’s “Aggregates business”.

Effective January 1, 2014, the Corporation made minor changes to the operations and management reporting structure of its Aggregates business, resulting in an immaterial change to its reportable segments. The Corporation currently conducts its Aggregates business through three reportable segments as follows:

AGGREGATES BUSINESS

Reportable Segments	Mid-America Group	Southeast Group	West Group
Operating Locations	Indiana, Iowa, northern Kansas, Kentucky, Maryland, Minnesota, eastern Nebraska, North Carolina, Ohio, South Carolina, Virginia, Washington and West Virginia	Alabama, Florida, Georgia, Mississippi, Tennessee, Nova Scotia and the Bahamas	Arkansas, Colorado, southern Kansas, Louisiana, Missouri, western Nebraska, Nevada, Oklahoma, Texas, Utah and Wyoming

Page 7 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

In addition to the Aggregates business, the Corporation has a Specialty Products segment, which accounted for 12% of consolidated 2013 net sales, that produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

Basis of Presentation

The accompanying unaudited consolidated financial statements of 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 in 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, 2013. In the opinion of management, the interim consolidated 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 consolidated results of operations for the three and six months ended June 30, 2014 are not indicative of the results expected for other interim periods or the full year. The consolidated balance sheet at December 31, 2013 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These consolidated 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, 2013. These consolidated financial statements do not reflect the Corporation’s acquisition of Texas Industries, Inc. (“TXI”) on July 1, 2014, which is discussed further in Note 11.

Early Adoption of New Accounting Standard

Effective January 1, 2014, the Corporation early adopted the Financial Accounting Standard Board’s (the “FASB”) final guidance on reporting discontinued operations. The guidance is to be applied prospectively and redefines discontinued operations to be either 1) a component of an entity or group of components that has been disposed of or is classified as held for sale that represents a strategic shift that has or will have a major effect on an entity’s operations and financial results or 2) a business that, upon acquisition, meets the criteria to be classified as held for sale. The adoption of the accounting standard did not have any effect on the Corporation’s financial position or results of operations.

Page 8 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Revenue Recognition Standard

The FASB issued an accounting standard update that amends the accounting guidance on revenue recognition. The amendments in this accounting standard update are intended to provide a more robust framework for addressing revenue issues, improve comparability of revenue recognition practices and improve disclosure requirements. The amendments are to be applied on a full retrospective or modified retrospective approach. The amendments in this accounting standard update are effective for interim and annual reporting periods beginning after December 15, 2016. The Corporation is currently evaluating the impact of the provisions of the accounting standard update, and at this time does not expect the impact to be material to its results of operations.

Reclassifications

Prior-year segment information for the Aggregates business presented in Note 9 has been reclassified to conform to the presentation of the Corporation’s current reportable segments.

Page 9 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss

Consolidated comprehensive earnings/loss for the Corporation consist of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense, and are presented in the Corporation’s consolidated statements of earnings and comprehensive earnings.

Comprehensive earnings attributable to Martin Marietta Materials, Inc. is as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2014		2013			2014		2013
	(Dollars in Thousands)
Net earnings attributable to Martin Marietta Materials, Inc.	$	59,521	$	41,308		$	37,904	$	13,468
Other comprehensive earnings (loss), net of tax		603		(1,309	)		1,973		(88	)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	$	60,124	$	39,999		$	39,877	$	13,380

Comprehensive earnings (loss) attributable to noncontrolling interests, consisting of net earnings or loss and adjustments for the funded status of pension and postretirement benefit plans, is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014			2013
	(Dollars in Thousands)
Net earnings (loss) attributable to noncontrolling interests	$	103	$	259	$	(1,432	)	$	(1,230	)
Other comprehensive earnings, net of tax		1		3		2			5
Comprehensive earnings (loss) attributable to noncontrolling interests	$	104	$	262	$	(1,430	)	$	(1,225	)

Page 10 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss (continued)

Accumulated other comprehensive loss consists of unrealized gains and losses related to the funded status of pension and postretirement benefit plans; foreign currency translation; and the unamortized value of terminated forward starting interest rate swap agreements, and is presented on the Corporation’s consolidated balance sheets. Changes in accumulated other comprehensive loss, net of tax, are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Three Months Ended June 30, 2014
Balance at beginning of period	$	(44,267	)	$	4,816		$	(3,293	)	$	(42,744	)
Other comprehensive earnings before reclassifications, net of tax		(426	)		842			—			416
Amounts reclassified from accumulated other comprehensive loss, net of tax		8			—			179			187
Other comprehensive earnings, net of tax		(418	)		842			179			603
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Three Months Ended June 30, 2013
Balance at beginning of period	$	(106,296	)	$	5,323		$	(3,975	)	$	(104,948	)
Other comprehensive loss before reclassifications, net of tax		(2,278	)		(1,169	)		—			(3,447	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,971			—			167			2,138
Other comprehensive earnings, net of tax		(307	)		(1,169	)		167			(1,309	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $276,000 and $1,490,000 for the three months ended June 30, 2014 and 2013, respectively.

Page 11 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss (continued)

	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Six Months Ended June 30, 2014
Balance at beginning of period	$	(44,549	)	$	3,902		$	(3,467	)	$	(44,114	)
Other comprehensive (loss ) earnings before reclassifications, net of tax		(430	)		1,756			—			1,326
Amounts reclassified from accumulated other comprehensive loss, net of tax		294			—			353			647
Other comprehensive earnings, net of tax		(136	)		1,756			353			1,973
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Six Months Ended June 30, 2013
Balance at beginning of period	$	(108,189	)	$	6,157		$	(4,137	)	$	(106,169	)
Other comprehensive loss earnings before reclassifications, net of tax		(2,312	)		(2,003	)		—			(4,315	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		3,898			—			329			4,227
Other comprehensive earnings, net of tax		1,586			(2,003	)		329			(88	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $280,000 and $1,512,000 for the six months ended June 30, 2014 and 2013, respectively.

Page 12 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss (continued)

Changes in net noncurrent deferred tax assets recorded in accumulated other comprehensive loss are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Net Noncurrent Deferred Tax Assets
	Three Months Ended June 30, 2014
Balance at beginning of period	$	29,016		$	2,155		$	31,171
Tax effect of other comprehensive earnings		271			(116	)		155
Balance at end of period	$	29,287		$	2,039		$	31,326
	Three Months Ended June 30, 2013
Balance at beginning of period	$	69,641		$	2,600		$	72,241
Tax effect of other comprehensive earnings		201			(108	)		93
Balance at end of period	$	69,842		$	2,492		$	72,334
	Six Months Ended June 30, 2014
Balance at beginning of period	$	29,198		$	2,269		$	31,467
Tax effect of other comprehensive earnings		89			(230	)		(141	)
Balance at end of period	$	29,287		$	2,039		$	31,326
	Six Months Ended June 30, 2013
Balance at beginning of period	$	70,881		$	2,707		$	73,588
Tax effect of other comprehensive earnings		(1,039	)		(215	)		(1,254	)
Balance at end of period	$	69,842		$	2,492		$	72,334

Page 13 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss (continued)

Reclassifications out of accumulated other comprehensive loss are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,						Affected line items in
	2014			2013			2014			2013			the consolidated financial statements
	(Dollars in Thousands)
Pension and postretirement benefit plans
Amortization of:
Prior service credit	$	(791	)	$	(695	)	$	(1,404	)	$	(1,403	)
Actuarial loss		804			3,955			1,889			7,852
		13			3,260			485			6,449		Cost of sales; Selling, general & administrative expenses
Tax effect		(5	)		(1,289	)		(191	)		(2,551	)	Deferred income taxes
	$	8		$	1,971		$	294		$	3,898
Unamortized value of terminated forward starting interest rate swap
Additional interest expense	$	295		$	275		$	583		$	544		Interest expense
Tax effect		(116	)		(108	)		(230	)		(215	)	Deferred income taxes
	$	179		$	167		$	353		$	329

Page 14 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings/loss 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. If there is a net loss, no amount of the undistributed loss is attributed to unvested participating securities. 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. For the three and six months ended June 30, 2014 and 2013, the diluted per-share computations reflect a change in the number of common shares outstanding 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 June 30,					Six Months Ended June 30,
	2014			2013		2014			2013
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	59,577		$	41,203	$	37,974		$	13,651
Less: Distributed and undistributed earnings attributable to unvested awards		246			197		154			182
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		59,331			41,006		37,820			13,469
Basic and diluted net (loss) earnings available to common shareholders from discontinued operations		(56	)		105		(70	)		(183	)
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	59,275		$	41,111	$	37,750		$	13,286
Basic weighted-average common shares outstanding		46,395			46,129		46,355			46,079
Effect of dilutive employee and director awards		134			131		122			138
Diluted weighted-average common shares outstanding		46,529			46,260		46,477			46,217

Page 15 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

2. Purchase of Noncontrolling Interest in Joint Venture

On April 2, 2014, the Corporation paid $19,604,000 for the remaining 50% interest in a joint venture.

3. Inventories, Net

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Finished products	$	358,759	$	368,334	$	366,320
Products in process and raw materials		20,732		16,077		18,701
Supplies and expendable parts		65,287		61,922		59,437
		444,778		446,333		444,458
Less: Allowances		96,610		99,026		95,585
Total	$	348,168	$	347,307	$	348,873

Page 16 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

4. Long-Term Debt

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	299,006	$	298,893	$	298,783
7% Debentures, due 2025		124,485		124,471		124,457
6.25% Senior Notes, due 2037		228,165		228,148		228,130
Term Loan Facility, due 2018, interest rate of 1.65% at June 30, 2014; 1.67% at December 31, 2013; and 2.20% at June 30, 2013		242,350		248,441		240,000
Revolving Facility, interest rate of 1.40% at June 30, 2014 and 1.89% at June 30, 2013		40,000		—		50,000
Trade Receivable Facility, interest rate of 0.75% at June 30, 2014; 0.77% at December 31, 2013; and 0.79% at June 30, 2013		150,000		130,000		150,000
Other notes		795		968		1,949
Total debt		1,084,801		1,030,921		1,093,319
Less: Current maturities		12,404		12,403		6,169
Long-term debt	$	1,072,397	$	1,018,518	$	1,087,150

On June 23, 2014, the Corporation priced its offering of $300,000,000 aggregate principal amount of its Floating Rate Senior Notes due 2017 (the “Floating Rate Notes”) and $400,000,000 of its 4.25% Senior Notes due 2024 (the “4.25% Senior Notes” and together with the Floating Rate Notes, the “Notes”). The bond transaction closed and settlement occurred on July 2, 2014. The proceeds from the offering were used to redeem $650,000,000 of 9.25% notes due in 2020 assumed with TXI plus a make-whole premium and accrued interest. In connection with the issuance of the Notes, the Corporation entered into an indenture, dated as of July 2, 2014, between the Corporation and Regions Bank, as trustee, and a Registration Rights Agreement, dated as of July 2, 2014, with respect to the Notes, among the Corporation, Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC, as representatives of the several initial purchasers named in Schedule I to the purchase agreement entered into on June 23, 2014 with respect to the Notes. The Floating Rate Senior Notes bear interest at a rate equal to the three-month LIBOR plus 1.10% and may not be redeemed prior to maturity. The 4.25% Senior Notes may be redeemed in whole or in part prior to their maturity at a make-whole redemption price.

Page 17 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

4. Long-Term Debt (continued)

The Corporation, through a wholly-owned special purpose subsidiary, has a trade receivable securitization facility with SunTrust Bank and certain other lenders that may become a party to the facility from time to time (the “Trade Receivable Facility”). The Trade Receivable Facility is backed by eligible, as defined, trade receivables of $311,792,000, $213,386,000 and $253,020,000 at June 30, 2014, December 31, 2013 and June 30, 2013, respectively, which are originated by the Corporation and then sold to the wholly-owned special purpose subsidiary by the Corporation. The Corporation continues to be responsible for the servicing and administration of the receivables purchased by the wholly-owned special purpose subsidiary. At June 30, 2014, December 31, 2013 and June 30, 2013, outstanding borrowings under the Trade Receivable Facility were classified as long-term on the consolidated balance sheet as the Corporation has the intent and ability to refinance amounts outstanding using other long-term credit facilities. The Trade Receivable Facility contains a cross-default provision to the Corporation’s other debt agreements. On April 18, 2014, the Corporation extended the maturity of the Trade Receivable Facility to September 30, 2014. On July 1, 2014, the Trade Receivable Facility was amended to increase the borrowing capacity from $150,000,000 to $250,000,000.

The Corporation’s Credit Agreement, which provides a $250,000,000 senior unsecured term loan (the “Term Loan Facility”) and a $350,000,000 five-year senior unsecured revolving facility (the “Revolving Facility”), 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 3.50x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation, as a consequence of such specified acquisition, does not have its rating on long-term unsecured debt fall below BBB by Standard & Poor’s or Baa2 by Moody’s and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the Trade Receivable Facility, consolidated debt, including debt for which the Corporation is a co-borrower, may be reduced by the Corporation’s unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation. The Corporation was in compliance with this Ratio at June 30, 2014.

Page 18 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

4. Long-Term Debt (continued)

Effective June 23, 2014, the Corporation amended the Credit Agreement to ensure the impact of the business combination with TXI does not impair liquidity available under the Term Loan Facility and the Revolving Facility. The amendment adjusts consolidated EBITDA to add back fees, costs or expenses relating to the TXI business combination incurred on or prior to the closing of the combination not to exceed $95,000,000; any integration or similar costs or expenses related to the TXI business combination incurred in any period prior to the second anniversary of the closing of the TXI business combination not to exceed $70,000,000; and any make-whole fees incurred in connection with the redemption of TXI’s 9.25% senior notes due 2020. The amendment also temporarily increases the maximum Ratio to 3.75x at September 30, 2014. The Ratio returns to the pre-amendment maximum of 3.50x for the December 31, 2014 calculation date.

Available borrowings under the Revolving Facility are reduced by any outstanding letters of credit issued by the Corporation under the Revolving Facility. At June 30, 2014, December 31, 2013 and June 30, 2013, the Corporation had $2,507,000 of outstanding letters of credit issued under the Revolving Facility.

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three and six months ended June 30, 2014, the Corporation recognized $295,000 and $583,000, respectively, as additional interest expense. For the three and six months ended June 30, 2013, the Corporation recognized $275,000 and $544,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the forward starting interest rate swap agreements will increase annual interest expense by approximately $1,200,000 until the maturity of the 6.6% Senior Notes in 2018.

5. Financial Instruments

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

Temporary cash investments are placed primarily in money market funds, money market demand deposit accounts and Eurodollar time deposits with the following financial institutions: Branch Banking and Trust Company, Comerica Bank, Fifth Third Bank, JPMorgan Chase Bank, N.A., Regions Bank 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.

Page 19 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

5. Financial Instruments (continued)

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, Colorado, Iowa and Georgia). The estimated fair values of customer receivables approximate their carrying amounts due to the short-term nature of the receivables.

Notes receivable are primarily promissory notes with customers and are not publicly traded. Management estimates that the fair value of notes receivable approximates the carrying amount.

The bank overdraft represents amounts to be funded to financial institutions for checks that have cleared the bank. The estimated fair value of the bank overdraft approximates its carrying value.

Accounts payable represent amounts owed to suppliers and vendors. The estimated fair value of accounts payable approximates its carrying amounts due to the short-term nature of the payables.

The carrying values and fair values of the Corporation’s long-term debt were $1,084,801,000 and $1,168,302,000, respectively, at June 30, 2014; $1,030,921,000 and $1,068,324,000, respectively, at December 31, 2013; and $1,093,319,000 and $1,141,592,000, respectively, at June 30, 2013. The estimated fair value of the Corporation’s publicly-registered long-term notes was estimated based on Level 1 of the fair value hierarchy using quoted market prices. The estimated fair value of other borrowings, which primarily represents variable-rate debt, approximates its carrying amount as the interest rates reset periodically.

6. Income Taxes

	Six Months Ended June 30,
	2014			2013
Estimated effective income tax rate:
Continuing operations		29.8	%		35.0	%
Discontinued operations		26.4	%		26.2	%
Consolidated overall		29.8	%		35.2	%

Page 20 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

6. Income Taxes (continued)

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 statutory depletion deduction for mineral reserves, the impact of foreign losses for which no tax benefit was realized 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 September 13, 2013, the U.S. Treasury Department and Internal Revenue Service issued final regulations addressing costs incurred in acquiring, producing or improving tangible property (the “tangible property regulations”). The tangible property regulations required the Corporation to make additional tax accounting method changes as of January 1, 2014. As of December 31, 2013, the Corporation estimated the tax impact of the regulatory change and recorded an increase in noncurrent deferred tax liabilities in the amount of $1,334,000, with a corresponding reduction in current taxes payable.

The Corporation’s unrecognized tax benefits, excluding interest, correlative effects and indirect benefits, are as follows:

	Six Months Ended June 30, 2014
	(Dollars in Thousands)
Unrecognized tax benefits at beginning of period	$	11,826
Gross increases – tax positions in prior years		1,898
Gross decreases – tax positions in prior years		(173	)
Gross increases – tax positions in current year		961
Unrecognized tax benefits at end of period	$	14,512

The Corporation records interest accrued in relation to unrecognized tax benefits as income tax expense. Penalties, if incurred, are recorded as operating expenses in the consolidated statements of earnings.

The Corporation anticipates that it is reasonably possible that unrecognized tax benefits may decrease up to $7,123,000, excluding indirect benefits, during the twelve months ending June 30, 2015 as a result of expected settlements with taxing authorities and the expiration of the foreign and domestic statute of limitations for the 2009 and 2010 tax years, respectively.

Page 21 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

6. Income Taxes (continued)

At June 30, 2014, unrecognized tax benefits of $7,939,000 related to interest accruals and permanent income tax differences, net of federal tax benefits, would have favorably affected the Corporation’s effective income tax rate if recognized.

The Corporation’s open tax years subject to federal, foreign or state examinations are 2009 through 2013.

7. Pension and Postretirement Benefits

The estimated components of the recorded net periodic benefit cost (credit) for pension and postretirement benefits are as follows:

	Three Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	3,092		$	4,060		$	51		$	56
Interest cost		5,624			5,799			305			251
Expected return on assets		(6,677	)		(6,717	)		—			—
Amortization of:
Prior service cost (credit)		96			113			(887	)		(808	)
Actuarial loss (gain)		877			3,949			(73	)		6
Net periodic benefit cost (credit)	$	3,012		$	7,204		$	(604	)	$	(495	)
	Six Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	7,131		$	8,060		$	93		$	113
Interest cost		12,971			11,512			559			506
Expected return on assets		(15,400	)		(13,335	)		—			—
Amortization of:
Prior service cost (credit)		223			224			(1,627	)		(1,627	)
Actuarial loss (gain)		2,022			7,840			(133	)		12
Net periodic benefit cost (credit)	$	6,947		$	14,301		$	(1,108	)	$	(996	)

Page 22 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

8. Commitments and Contingencies

Legal and Administrative Proceedings

The Corporation is engaged in certain legal and administrative proceedings incidental to its normal business activities. In the opinion of management and counsel, based upon currently-available facts, it is remote that the ultimate outcome of any litigation and other proceedings, including those pertaining to environmental matters, relating to the Corporation and its subsidiaries, will have a material adverse effect on the overall results of the Corporation’s operations, its cash flows or its financial position.

Environmental and Governmental Regulations

The United States Environmental Protection Agency (“EPA”) includes the lime industry as a national enforcement priority under the federal Clean Air Act (“CAA”). As part of the industry wide effort, the EPA issued Notices of Violation/Findings of Violation (“NOVs”) to the Corporation in 2010 and 2011 regarding the Corporation’s compliance with the CAA New Source Review (“NSR”) program at its Specialty Products dolomitic lime manufacturing plant in Woodville, Ohio. The Corporation has been providing information to the EPA in response to these NOVs and has had several meetings with the EPA. The Corporation believes it is in substantial compliance with the NSR program. At this time, the Corporation cannot reasonably estimate what likely penalties or upgrades to equipment might ultimately be required. The Corporation believes that any costs related to any upgrades to capital equipment will be spread over time and will not have a material adverse effect on the Corporation’s results of operations or its financial condition, but can give no assurance that the ultimate resolution of this matter will not have a material adverse effect on the financial condition or results of operations of the Specialty Products segment of the business.

Borrowing Arrangements with Affiliate

The Corporation is a co-borrower with an unconsolidated affiliate for a $24,000,000 revolving line of credit agreement with Fifth Third Bank. The line of credit expires in August 2014. The affiliate has agreed to reimburse and indemnify the Corporation for any payments and expenses the Corporation may incur from this agreement. The Corporation holds a lien on the affiliate’s membership interest in a joint venture as collateral for payment under the revolving line of credit.

In September 2013, the Corporation loaned $3,402,000 to this unconsolidated affiliate to repay in full the outstanding balance of the affiliate’s loan with Bank of America, N.A. and entered into a loan agreement with the affiliate for monthly repayment of principal and interest of that loan amount through May 2016. The Corporation holds a lien on the affiliate’s property as collateral for payment under the loan and security agreement. As of June 30, 2014 and December 31, 2013, the amount due from the affiliate related to this loan was $2,455,000 and $2,984,000, respectively.

In addition, the Corporation has a $6,000,000 outstanding loan due from this unconsolidated affiliate as of June 30, 2014 and December 31, 2013.

Page 23 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

9. Business Segments

The Aggregates business contains three reportable business segments: Mid-America Group, Southeast Group and West Group. The Corporation also has a Specialty Products segment.

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, business development expenses, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Total revenues:
Mid-America Group	$	240,526		$	217,516		$	356,235		$	337,056
Southeast Group		75,168			60,442			134,988			116,184
West Group		286,811			222,024			477,598			370,420
Total Aggregates Business		602,505			499,982			968,821			823,660
Specialty Products		66,720			61,344			129,034			121,574
Total	$	669,225		$	561,326		$	1,097,855		$	945,234
Net sales:
Mid-America Group	$	218,703		$	198,215		$	325,236		$	308,402
Southeast Group		70,725			55,261			126,106			106,584
West Group		250,589			197,224			411,004			324,603
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Earnings (Loss) from operations:
Mid-America Group	$	57,283		$	47,717		$	45,517		$	33,753
Southeast Group		(1,302	)		(5,176	)		(7,413	)		(13,563	)
West Group		30,873			16,395			32,954			8,270
Total Aggregates Business		86,854			58,936			71,058			28,460
Specialty Products		20,995			18,726			37,280			35,804
Corporate		(11,608	)		(8,027	)		(27,994	)		(17,950	)
Total	$	96,241		$	69,635		$	80,344		$	46,314

Page 24 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

9. Business Segments (continued)

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Assets employed:
Mid-America Group	$	1,311,860	$	1,242,394	$	1,185,684
Southeast Group		606,933		611,906		588,094
West Group		1,084,291		1,030,599		1,077,477
Total Aggregates Business		3,003,084		2,884,899		2,851,255
Specialty Products		151,129		154,024		153,542
Corporate		201,830		220,903		226,322
Total	$	3,356,043	$	3,259,826	$	3,231,119

The Aggregates business includes the aggregates product line and vertically-integrated operations, which include asphalt, ready mixed concrete and road paving product lines. All vertically-integrated operations reside in the West Group. The following tables provide net sales and gross profit by product line for the Aggregates business, which are reconciled to consolidated amounts, as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Net sales:
Aggregates	$	421,974		$	357,241		$	685,858		$	605,031
Asphalt		22,627			18,811			33,125			28,445
Ready Mixed Concrete		52,379			35,305			90,388			61,582
Road Paving		43,037			39,343			52,975			44,531
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Gross profit (loss):
Aggregates	$	100,142		$	78,942		$	110,194		$	81,003
Asphalt		4,869			4,903			3,443			2,448
Ready Mixed Concrete		6,982			1,869			9,926			1,788
Road Paving		(249	)		(284	)		(4,231	)		(4,571	)
Total Aggregates Business		111,744			85,430			119,332			80,668
Specialty Products		23,394			21,284			42,149			40,866
Corporate		464			282			(43	)		(1,717	)
Total	$	135,602		$	106,996		$	161,438		$	119,817

Page 25 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

10. Supplemental Cash Flow Information

The components of the change in other assets and liabilities, net, are as follows:

	Six Months Ended
	June 30,
	2014			2013
	(Dollars in Thousands)
Other current and noncurrent assets	$	(6,139	)	$	(3,729	)
Accrued salaries, benefits and payroll taxes		(755	)		(5,366	)
Accrued insurance and other taxes		3,911			1,996
Accrued income taxes		16,678			(430	)
Accrued pension, postretirement and postemployment benefits		4,281			2,122
Other current and noncurrent liabilities		(389	)		10,171
	$	17,587		$	4,764

The change in accrued income taxes is primarily driven by an increase in the estimated tax provision for 2014. The change in other current and noncurrent liabilities is primarily attributable to estimated settlements with taxing authorities recorded in 2013.

Noncash investing and financing activities are as follows:

	Six Months Ended
	June 30,
	2014		2013
	(Dollars in Thousands)
Noncash investing and financing activities:
Acquisition of assets through capital lease	$	6,333	$	—

Page 26 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

11. Business Developments

TXI Business Combination

On July 1, 2014, subsequent to the end of the Corporation’s second quarter and pursuant to the merger agreement (the “Merger Agreement”) dated as of January 27, 2014 by and among the Corporation, Project Holdings, Inc., a wholly-owned subsidiary of the Corporation (“Merger Sub”), and TXI, Merger Sub merged with and into TXI, with TXI surviving as a wholly-owned subsidiary of the Corporation (the “Merger”). As a result of the Merger, each outstanding share of TXI common stock (other than shares owned by TXI, the Corporation or Merger Sub, which were cancelled) was converted into the right to receive 0.70 shares of the Corporation’s common stock, with cash paid in lieu of fractional shares. The Corporation issued approximately 20,300,000 shares of its common stock to former TXI stockholders in connection with the Merger. Based on the Corporation’s closing stock price on July 1, 2014 of $132.00, the aggregate value of the Corporation’s common stock delivered to former TXI stockholders was approximately $2,680,000,000. Additionally, the fair value of outstanding TXI stock options and stock appreciation rights that were converted to the Corporation’s stock awards at the acquisition date will be a component of the total purchase price.

TXI is the largest producer of cement in Texas and a major cement producer in California. TXI is also a major supplier of construction aggregate, ready mixed concrete and concrete products. The combination expands the Corporation’s geographic footprint and positions the Corporation to benefit from the strength of the combined aggregates platform.

The Corporation is in the process of fair valuing assets acquired and liabilities assumed, and as of August 4, 2014, the initial accounting for the business combination has not been completed pending the determination of these values. However, the assets included are cash and cash equivalents; trade receivables; inventories (including finished goods, parts and supplies); deferred income tax assets and liabilities; real property; investments; property, plant and equipment; and intangibles. Liabilities to be assumed are accounts payable; workers’ compensation and property liability accruals; notes payables; defined benefit plans; and litigation accruals.

For the six months ended June 30, 2014, the Corporation incurred $12,781,000 of business development expenses and $2,210,000 of acquisition integration expenses related to this business combination.

Page 27 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

11. Business Developments (continued)

Assets Held for Sale

On June 27, 2014, the Corporation announced that the U.S. Department of Justice (“DOJ”) completed its review of the Corporation’s business transaction with TXI and the Corporation reached an agreement with the DOJ. Under the terms of the agreement, the Corporation will divest an aggregates quarry in Oklahoma and two rail yards in Texas. Assets held for sale are inventory and property, plant and equipment. Liabilities to be transferred with the sale are asset retirement obligations. At June 30, 2014, these assets and liabilities are included with other current assets and other current liabilities, respectively, on the consolidated balance sheet.

Page 28 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

OVERVIEW Martin Marietta Materials, Inc., (the “Corporation”) is the nation’s second largest producer of construction aggregates. The Corporation’s annual consolidated net sales and operating earnings are predominately derived from its Aggregates business, which processes and sells granite, limestone, and other aggregates products, including asphalt, ready mixed concrete and road paving construction services, from a network of nearly 300 quarries, distribution facilities and plants to customers in 30 states, Canada, the Bahamas and the Caribbean Islands. The Aggregates business’ products are used primarily by commercial customers principally in domestic construction of highways and other infrastructure projects and for nonresidential and residential building development. Aggregates products are also used in the railroad, agricultural, utility and environmental industries.

The Corporation currently conducts its Aggregates business through three reportable business segments: Mid-America Group, Southeast Group and West Group.

AGGREGATES BUSINESS

Reportable Segments	Mid-America Group	Southeast Group	West Group
Operating Locations	Indiana, Iowa, northern Kansas, Kentucky, Maryland, Minnesota, eastern Nebraska, North Carolina, Ohio, South Carolina, Virginia, Washington and West Virginia	Alabama, Florida, Georgia, Mississippi, Tennessee, Nova Scotia and the Bahamas	Arkansas, Colorado, southern Kansas, Louisiana, Missouri, western Nebraska, Nevada, Oklahoma, Texas, Utah and Wyoming
Primary Product Lines	Aggregates (crushed stone, sand and gravel)	Aggregates (crushed stone, sand and gravel)	Aggregates (crushed stone, sand and gravel), asphalt, ready mixed concrete and road paving
Primary Types of Aggregates Locations	Quarries and Distribution Yards	Quarries and Distribution Yards	Quarries and Distribution Yards
Primary Modes of Transportation for Aggregates Product Line	Truck and Rail	Truck, Rail and Water	Truck and Rail

The Corporation also has a Specialty Products segment that produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

Page 29 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

CRITICAL ACCOUNTING POLICIES The Corporation outlined its critical accounting policies in its Annual Report on Form 10-K for the year ended December 31, 2013. There were no changes to the Corporation’s critical accounting policies during the six months ended June 30, 2014.

STRATEGIC INITIATIVES

On July 1, 2014, pursuant to the merger agreement, the Corporation completed the business combination with Texas Industries, Inc. (“TXI”), pursuant to which TXI became a wholly-owned subsidiary of the Corporation.

TXI is the largest producer of cement in Texas and a major cement producer in California. TXI is also a major supplier of construction aggregates, ready mixed concrete and concrete products. The combination expands the Corporation’s geographic footprint and positions the Corporation to benefit from the strength of the combined aggregates platform.

RESULTS OF OPERATIONS

Except as indicated, the comparative analysis in this Management’s Discussion and Analysis of Financial Condition and Results of Operations reflects results from continuing operations and is based on net sales and cost of sales. Gross margin and operating margin calculated as percentages of total revenues represent the most directly comparable financial measures calculated in accordance with generally accepted accounting principles (“GAAP”). However, gross margin as a percentage of net sales and operating margin as a percentage of net sales represent non-GAAP measures. The Corporation presents these ratios calculated based on net sales, as it is consistent with the basis by which management reviews the Corporation’s operating results. Further, management believes it is consistent with the basis by which investors analyze the Corporation’s operating results given that freight and delivery revenues and costs represent pass-throughs and have no profit mark-up. The following tables present the calculations of gross margin and operating margin for the three and six months ended June 30, 2014 and 2013 in accordance with GAAP and reconciliations of the ratios as percentages of total revenues to percentages of net sales:

Page 30 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Gross Margin in Accordance with GAAP

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Gross profit	$	135,602		$	106,996		$	161,438		$	119,817
Total revenues	$	669,225		$	561,326		$	1,097,855		$	945,234
Gross margin		20.3	%		19.1	%		14.7	%		12.7	%

Gross Margin Excluding Freight and Delivery Revenues

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Gross profit	$	135,602		$	106,996		$	161,438		$	119,817
Total revenues	$	669,225		$	561,326		$	1,097,855		$	945,234
Less: Freight and delivery revenues		(67,288	)		(53,994	)		(116,240	)		(93,844	)
Net sales	$	601,937		$	507,332		$	981,615		$	851,390
Gross margin excluding freight and delivery revenues		22.5	%		21.1	%		16.4	%		14.1	%

Operating Margin in Accordance with GAAP

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Earnings from operations	$	96,241		$	69,635		$	80,344		$	46,314
Total revenues	$	669,225		$	561,326		$	1,097,855		$	945,234
Operating margin		14.4	%		12.4	%		7.3	%		4.9	%

Page 31 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Operating Margin Excluding Freight and Delivery Revenues

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
		(Dollars in Thousands)
Earnings from operations	$	96,241		$	69,635		$	80,344		$	46,314
Total revenues	$	669,225		$	561,326		$	1,097,855		$	945,234
Less: Freight and delivery revenues		(67,288	)		(53,994	)		(116,240	)		(93,844	)
Net sales	$	601,937		$	507,332		$	981,615		$	851,390
Operating margin excluding freight and delivery revenues		16.0	%		13.7	%		8.2	%		5.4	%

Impact of Business Development and Acquisition Integration Expenses

Adjusted consolidated earnings from operations and adjusted earnings per diluted share for the three and six months ended June 30, 2014, exclude the impact of business development and acquisition integration expenses related to the business combination with TXI, and represent non-GAAP financial measures. Management presents these measures for investors and analysts to evaluate and forecast the Corporation’s financial results, as these business development and acquisition integration expenses are nonrecurring costs (in thousands, except per share data).

The following calculation provides the impact of business development and acquisition integration expenses related to the business combination with TXI on the loss per diluted share for the three and six months ended June 30, 2014:

	Three Months Ended			Six Months Ended
Business development and acquisition integration expenses related to the business combination with TXI	$	5,265		$	14,991
Income tax benefit		(2,073	)		(5,905	)
After-tax impact of business development and acquisition integration expenses related to the business combination with TXI	$	3,192		$	9,086
Diluted average number of common shares outstanding		46,529			46,477
Per diluted share impact of business development and acquisition integration expenses related to the business combination with TXI	$	(0.07	)	$	(0.20	)

Page 32 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

The following reconciles the earnings per diluted share in accordance with generally accepted accounting principles for the three and six months ended June 30, 2014, to adjusted earnings per diluted share, which excludes the impact of business development and acquisition integration expenses related to the business combination with TXI:

	Three Months Ended		Six Months Ended
Earnings per diluted share in accordance with generally accepted accounting principles	$	1.27	$	0.81
Add back: per diluted share impact of business development and acquisition integration expenses related to the business combination with TXI		0.07		0.20
Adjusted earnings per diluted share	$	1.34	$	1.01

The following reconciles consolidated earnings from operations in accordance with generally accepted accounting principles for the three and six months ended June 30, 2014, to adjusted consolidated earnings from operations, which excludes the impact of business development and acquisition integration expenses related to the business combination with TXI:

	Three Months Ended		Six Months Ended
Consolidated earnings from operations in accordance with generally accepted accounting principles	$	96,241	$	80,344
Add back: business development and acquisition integration expenses related to the business combination with TXI		5,265		14,991
Adjusted consolidated earnings from operations	$	101,506	$	95,335

Page 33 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Significant items for the quarter ended June 30, 2014 (unless noted, all comparisons are versus the prior-year quarter):

• Earnings per diluted share of $1.27 (includes a $0.07 per diluted share charge for business development and acquisition integration expenses related to TXI); adjusted earnings per diluted share of $1.34 compared with earnings per diluted share of $0.89

• Record consolidated net sales of $601.9 million compared with $507.3 million

• Aggregates product line volume increase of 12.7%; aggregates product line pricing increase of 5.0%

• Specialty Products record net sales of $61.9 million and earnings from operations of $21.0 million

• Consolidated gross margin (excluding freight and delivery revenues) of 22.5%, up 140 basis points

• Consolidated selling, general and administrative expenses (SG&A) of 6.1% of net sales, a reduction of $1.2 million or 140 basis points

• Consolidated earnings from operations of $96.2 million (includes $5.3 million of business development expenses related to the TXI acquisition); adjusted consolidated earnings from operations of $101.5 million compared with consolidated earnings from operations of $69.6 million

The following table presents net sales, gross profit (loss), selling, general and administrative expenses and earnings (loss) from operations data for the Corporation and its reportable segments for the three months ended June 30, 2014 and 2013. In each case, the data is stated as a percentage of net sales of the Corporation or the relevant segment, as the case may be.

Page 34 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

	Three Months Ended June 30,
	2014					2013
	Amount			% of Net Sales		Amount			% of Net Sales
	(Dollars in Thousands)
Net sales:
Mid-America Group	$	218,703				$	198,215
Southeast Group		70,725					55,261
West Group		250,589					197,224
Total Aggregates Business		540,017			100.0		450,700			100.0
Specialty Products		61,920			100.0		56,632			100.0
Total	$	601,937			100.0	$	507,332			100.0
Gross profit (loss):
Mid-America Group	$	68,593			31.4	$	61,091			30.8
Southeast Group		3,053			4.3		(551	)		(1.0	)
West Group		40,098			16.0		24,890			12.6
Total Aggregates Business		111,744			20.7		85,430			19.0
Specialty Products		23,394			37.8		21,284			37.6
Corporate		464			—		282			—
Total	$	135,602			22.5	$	106,996			21.1
Selling, general & administrative expenses:
Mid-America Group	$	13,192				$	13,462
Southeast Group		4,577					4,491
West Group		10,746					10,429
Total Aggregates Business		28,515			5.3		28,382			6.3
Specialty Products		2,468			4.0		2,529			4.5
Corporate		5,583			—		6,932			—
Total	$	36,566			6.1	$	37,843			7.5
Earnings (Loss) from operations:
Mid-America Group	$	57,283				$	47,717
Southeast Group		(1,302	)				(5,176	)
West Group		30,873					16,395
Total Aggregates Business		86,854			16.1		58,936			13.1
Specialty Products		20,995			33.9		18,726			33.1
Corporate		(11,608	)		—		(8,027	)		—
Total	$	96,241			16.0	$	69,635			13.7

Page 35 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Aggregates product line shipments reflect growth in all end-use markets, with overall volume increasing 12.7%. The nonresidential market represented 31% of quarterly shipments and increased 16%, reflecting growth in the energy and commercial sectors. The Corporation continues to benefit from the nation’s increasing investment in shale energy, particularly in South Texas. The residential end-use market accounted for 14% of quarterly shipments, and volumes to this market increased 20%. Growth was strongest in the Southeast and West Groups. The ChemRock/Rail market accounted for 10% of volumes and increased 13% over the prior-year quarter.

Shipments to the infrastructure market comprised the remaining 45% of the aggregates product line and increased 9% over the prior-year quarter. Growth was notable in Texas and Colorado, which each continue to show a commitment to securing alternative financing sources for infrastructure projects. Infrastructure shipments in Texas reflect the benefit of a robust state Department of Transportation program and the nearly $8 billion of projects awarded in 2013. Infrastructure shipments in Colorado also grew significantly reflecting an increased state-level budget as well as reconstruction efforts resulting from the historic flooding in 2013. Additionally, earlier this year, Colorado approved its first public-private partnership project to renovate and expand the U.S. 36 corridor.

The current federal highway bill, Moving Ahead for Progress in the 21^st Century Act, or MAP-21, expires on September 30, 2014. While there is bipartisan support for renewing long-term investment in the country’s infrastructure system, Congress has historically authorized continuing resolutions to bridge funding until the passage of a new bill. The Corporation also continues to monitor the status of the Highway Trust Fund. Recently, the House of Representatives passed a plan to provide $10.8 billion to the Highway Trust Fund from a combination of general fund transfers and tax reform and extend MAP-21 under a continuing resolution until May 31, 2015. The Senate is expected to address highway legislation before Congress’ August recess. While the Corporation expects the current uncertainty in federal funding to be resolved, infrastructure shipments in the second half of the year and the first half of 2015 could be negatively affected if funding concerns persist.

As previously noted, aggregates shipments for the West Group increased 22% as compared with the prior year quarter. Aggregates shipments for the Mid-America and Southeast Groups increased 5.1% and 7.3%, respectively. Recovery in eastern states is being led by private sector construction combined with some meaningful infrastructure projects, particularly in North Carolina, Georgia and Florida, where employment growth has accelerated and the residential construction segment is showing signs of more widespread growth. As the eastern U.S. construction recovery strengthens, the Corporation believes it will follow a growth pattern similar to that seen in many western markets.

Page 36 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Aggregates product line pricing increased in each reportable group, led by a 10.3% improvement in the Southeast Group. Based on pricing trends through the first half of the year and mid-year price increases in many geographic areas, the Corporation is reaffirming its full-year aggregates product line pricing guidance.

The vertically-integrated product lines each reported growth in net sales. The ready mixed concrete product line achieved a 48% increase in net sales, which reflected volume and pricing improvement of 27% and 12%, respectively, and led to an 800-basis-point improvement in the product line’s gross margin (excluding freight and delivery revenues). The asphalt product line reported a 20% increase in net sales, due to increased shipments.

Aggregates product line production increased 10.3%, as operations responded to current demand. Production cost per ton declined slightly as increased leverage was partially offset by higher repair costs. In addition to increased production during the quarter, inventory on hand was utilized to meet demand, resulting in an increase in cost of goods sold of $9.3 million. The Aggregates business gross margin (excluding freight and delivery revenues) was 20.7%, a 170-basis-point improvement over the prior-year quarter.

Net sales by product line for the Aggregates business are as follows:

	Three Months Ended June 30,
	2014		2013
	(Dollars in Thousands)
Net sales1:
Aggregates	$	421,974	$	357,241
Asphalt		22,627		18,811
Ready Mixed Concrete		52,379		35,305
Road Paving		43,037		39,343
Total Aggregates Business	$	540,017	$	450,700

¹  Net sales by product line reflect the elimination of inter-product line sales.

Page 37 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

The following tables present volume and pricing data and shipments data for the aggregates product line.

	Three Months Ended June 30, 2014
	Volume			Pricing
Volume/Pricing Variance (1)
Heritage Aggregates Product Line (2):
Mid-America Group		5.1	%		4.9	%
Southeast Group		7.3	%		10.3	%
West Group		22.2	%		4.6	%
Heritage Aggregates Operations(2)		11.6	%		4.7	%
Aggregates Product Line (3)		12.7	%		5.0	%
	Three Months Ended June 30,
	2014			2013
	(tons in thousands)
Shipments
Heritage Aggregates Product Line (2):
Mid-America Group		18,626			17,724
Southeast Group		4,586			4,273
West Group		15,371			12,576
Heritage Aggregates Operations(2)		38,583			34,573
Acquisitions		390			—
Divestitures (4)		1			1
Aggregates Product Line (3)		38,974			34,574
	Three Months Ended June 30,
	2014			2013
	(tons in thousands)
Shipments
Aggregates Product Line (3):
Tons to external customers		37,417			33,286
Internal tons used in other product lines		1,557			1,288
Total aggregates tons		38,974			34,574

(1) Volume/pricing variances reflect the percentage increase/(decrease) from the comparable period in the prior year.

(2) Heritage Aggregates Product Line and Heritage Aggregates Operations exclude volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and exclude divestitures.

(3) Aggregates Product Line includes all acquisitions from the date of acquisition and divestitures through the date of disposal.

(4) Divestitures include the tons related to divested aggregates product line operations up to the date of divestiture.

Page 38 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

The average per-ton selling price for the aggregates product line was $11.00 and $10.48 for the three months ended June 30, 2014 and 2013, respectively.

The Corporation’s vertically-integrated operations include asphalt, ready mixed concrete and road paving businesses in Arkansas, Colorado, Texas and Wyoming. Average selling prices by product line for the Corporation’s vertically-integrated operations are as follows:

	Three Months Ended June 30,
	2014		2013
Asphalt	$	42.06/ton	$	42.55/ton
Ready Mixed Concrete	$	92.23/yd3	$	82.29/yd3

Unit shipments by product line for the Corporation’s vertically-integrated operations are as follows:

	Three Months Ended June 30,
	2014		2013
	(in thousands)
Asphalt Product Line:
Tons to external customers		458		382
Internal tons used in road paving business		492		461
Total asphalt tons		950		843
Ready Mixed Concrete – cubic yards		552		436

The Aggregates business is significantly affected by erratic weather patterns, seasonal changes and other weather-related conditions. Production and shipment levels for aggregates, asphalt, ready mixed concrete and road paving materials correlate with general construction activity levels, most of which occurs in the spring, summer and fall. Thus, production and shipment levels vary by quarter. Operations concentrated in the northern and midwestern United States generally experience more severe winter weather conditions than operations in the Southeast and Southwest. Excessive rainfall, and conversely excessive drought, can also jeopardize shipments, production and profitability in all markets served by the Corporation. Because of the potentially significant impact of weather on the Corporation’s operations, first-half results are not indicative of expected performance for other interim periods or the full year.

Page 39 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Each of the Aggregates business’ three reportable segments leveraged net sales increases to achieve gross margin (excluding freight and delivery revenues) improvement over the prior-year quarter.

Asphalt and ready mixed concrete businesses continued to experience volume increases while ready mixed concrete improved its average selling price, ending the quarter with net sales of $52.4 million compared to $35.3 million. The slight decline in asphalt pricing is primarily due to a special project in the Central Texas Aggregate District in the Southwest Division during the prior-year quarter. The average selling price for this district was negatively affected by $11.03 due to the absence of the project.

The Specialty Products business continued its strong performance and generated record net sales of $61.9 million, an increase of 9.3%, over the prior-year quarter. Growth was primarily attributable to the chemicals product line. The business’ gross margin (excluding freight and delivery revenues) of 37.8% increased 20 basis points over the prior-year quarter’s gross margin of 37.6%. Second-quarter earnings from operations were $21.0 million compared with $18.7 million in the prior-year quarter.

Consolidated gross margin (excluding freight and delivery revenues) was 22.5% for 2014 compared to 21.1% for 2013. The following presents a rollforward of consolidated gross profit (dollars in thousands):

Consolidated gross profit, quarter ended June 30, 2013	$	106,996
Aggregates product line:
Volume strength		46,755
Pricing strength		17,978
Cost increases, net		(43,533	)
Increase in aggregates product line gross profit		21,200
Vertically-integrated operations		5,114
Specialty Products		2,110
Corporate		182
Increase in consolidated gross profit		28,606
Consolidated gross profit, quarter ended June 30, 2014	$	135,602

Page 40 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Gross profit (loss) by business is as follows:

	Three Months Ended June 30,
	2014			2013
	(Dollars in Thousands)
Gross profit (loss):
Aggregates	$	100,142		$	78,942
Asphalt		4,869			4,903
Ready Mixed Concrete		6,982			1,869
Road Paving		(249	)		(284	)
Total Aggregates Business		111,744			85,430
Specialty Products		23,394			21,284
Corporate		464			282
Total	$	135,602		$	106,996

Consistent with expectations, consolidated SG&A declined $1.3 million, or 140 basis points as a percentage of net sales. Lower pension expense and the absence of information systems upgrade costs incurred in 2013 primarily account for the decrease in 2014. The Corporation incurred $5.3 million of business development and acquisition integration expenses related to the business combination with TXI. Excluding these business development and acquisition integration expenses, adjusted consolidated earnings from operations were $101.5 million. This compares with consolidated earnings from operations of $69.6 million in the prior-year quarter.

Among other items, other operating income and expenses, net, includes gains and losses on the sale of assets; recoveries and writeoffs related to customer accounts receivable; rental, royalty and services income; accretion expense, depreciation expense and gains and losses related to asset retirement obligations; and research and development costs. For the second quarter, consolidated other operating income and expenses, net, was income of $2.5 million in 2014 compared with income of $0.8 million in 2013. Second quarter 2014 included higher gains on the sale of assets compared with 2013.

Page 41 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Six Months Ended June 30

Significant items for the six months ended June 30, 2014 (unless noted, all comparisons are versus the prior-year period):

• Earnings per diluted share of $0.81 (includes a $0.20 per diluted share charge for business development and acquisition integration expenses related to the business combination with TXI); adjusted earnings per diluted share of $1.01 compared with earnings per diluted share of $0.29

• Consolidated net sales of $981.6 million, up 15.3%, compared with $851.4 million

• Aggregates product line volume up 10.9%; aggregates product line pricing up 2.4%

• Specialty Products net sales of $119.3 million and earnings from operations of $37.3 million

• Consolidated SG&A down 170 basis points as a percentage of net sales

• Consolidated earnings from operations of $80.3 million (includes $15.0 million of business development and acquisition integration expenses related to the business combination with TXI); adjusted consolidated earnings from operations of $95.3 million compared with $46.3 million

The following table presents net sales, gross profit, selling, general and administrative expenses and earnings from operations data for the Corporation and its reportable segments for the six months ended June 30, 2014 and 2013. In each case, the data is stated as a percentage of net sales of the Corporation or the relevant segment, as the case may be.

Page 42 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

	Six Months Ended June 30,
	2014					2013
	Amount			% of Net Sales		Amount			% of Net Sales
	(Dollars in Thousands)
Net sales:
Mid-America Group	$	325,236				$	308,402
Southeast Group		126,106					106,584
West Group		411,004					324,603
Total Aggregates Business		862,346			100.0		739,589			100.0
Specialty Products		119,269			100.0		111,801			100.0
Total	$	981,615			100.0	$	851,390			100.0
Gross profit (loss):
Mid-America Group	$	67,046			20.6	$	59,015			19.1
Southeast Group		187			0.1		(5,456	)		(5.1	)
West Group		52,099			12.7		27,109			8.4
Total Aggregates Business		119,332			13.8		80,668			10.9
Specialty Products		42,149			35.3		40,866			36.6
Corporate		(43	)		—		(1,717	)		—
Total	$	161,438			16.4	$	119,817			14.1
Selling, general & administrative expenses:
Mid-America Group	$	26,126				$	26,615
Southeast Group		8,785					8,970
West Group		21,680					21,257
Total Aggregates Business		56,591			6.6		56,842			7.7
Specialty Products		4,914			4.1		5,020			4.5
Corporate		9,308			—		13,630			—
Total	$	70,813			7.2	$	75,492			8.9
Earnings (Loss) from operations:
Mid-America Group	$	45,517				$	33,753
Southeast Group		(7,413	)				(13,563	)
West Group		32,954					8,270
Total Aggregates Business		71,058			8.2		28,460			3.8
Specialty Products		37,280			31.3		35,804			32.0
Corporate		(27,994	)		—		(17,950	)		—
Total	$	80,344			8.2	$	46,314			5.4

Page 43 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Net sales by product line for the Aggregates business are as follows:

	Six Months Ended June 30,
	2014		2013
	(Dollars in Thousands)
Net sales1:
Aggregates	$	685,858	$	605,031
Asphalt		33,125		28,445
Ready Mixed Concrete		90,388		61,582
Road Paving		52,975		44,531
Total Aggregates Business	$	862,346	$	739,589

¹  Net sales by product line reflect the elimination of inter-product line sales.

The following tables present volume and pricing data and shipments data for the aggregates product line.

	Six Months Ended June 30, 2014
	Volume			Pricing
Volume/Pricing Variance (1)
Heritage Aggregates Product Line (2):
Mid-America Group		1.6	%		3.7	%
Southeast Group		2.7	%		7.1	%
West Group		21.9	%		1.4	%
Heritage Aggregates Operations(2)		9.7	%		2.2	%
Aggregates Product Line (3)		10.9	%		2.4	%

	Six Months Ended June 30,
	2014		2013
	(tons in thousands)
Shipments
Heritage Aggregates Product Line (2):
Mid-America Group		27,176		26,753
Southeast Group		8,310		8,093
West Group		27,439		22,506
Heritage Aggregates Operations(2)		62,925		57,352
Acquisitions		667		—
Divestitures (4)		1		2
Aggregates Product Line (3)		63,593		57,354

Page 44 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

	Six Months Ended June 30,
	2014		2013
	(tons in thousands)
Shipments
Aggregates Product Line (3):
Tons to external customers		61,136		55,408
Internal tons used in other product lines		2,457		1,946
Total aggregates tons		63,593		57,354

(1) Volume/pricing variances reflect the percentage increase / (decrease) from the comparable period in the prior year.

(2) Heritage Aggregates Product Line and Heritage Aggregates Operations exclude volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and exclude divestitures.

(3) Aggregates Product Line includes all acquisitions from the date of acquisition and divestitures through the date of disposal.

(4) Divestitures include the tons related to divested aggregates product line operations up to the date of divestiture.

The per-ton average selling price for the aggregates product line was $10.93 and $10.67 for the six months ended June 30, 2014 and 2013, respectively.

Average selling prices by product line for the Corporation’s vertically-integrated operations are as follows:

	Six Months Ended June 30,
	2014		2013
Asphalt	$	42.11/ton	$	42.51/ton
Ready Mixed Concrete	$	90.97/yd3	$	82.04/yd3

Unit shipments by product line for the Corporation’s vertically-integrated operations are as follows:

	Six Months Ended June 30,
	2014		2013
	(in thousands)
Asphalt Product Line:
Tons to external customers		706		608
Internal tons used in road paving business		570		496
Total asphalt tons		1,276		1,104
Ready Mixed Concrete – cubic yards		959		765

Page 45 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

For 2014, Specialty Products’ net sales of $119.3 million increased $7.5 million, or 6.7%, over the prior-year period. Earnings from operations were $37.3 million compared with $35.8 million.

Consolidated gross margin (excluding freight and delivery revenues) was 16.4% for 2014 versus 14.1% for 2013. The following presents a rollforward of the Corporation’s gross profit (dollars in thousands):

Consolidated gross profit, six months ended June 30, 2013	$	119,817
Aggregates product line:
Pricing strength		65,915
Volume strength		14,912
Cost increases, net		(51,636	)
Increase in aggregates product line gross profit		29,191
Vertically-integrated operations		9,473
Specialty Products		1,283
Corporate		1,674
Increase in consolidated gross profit		41,621
Consolidated gross profit, six months ended June 30, 2014	$	161,438

Gross profit (loss) by business is as follows:

	Six Months Ended June 30,
	2014			2013
	(Dollars in Thousands)
Gross profit (loss):
Aggregates	$	110,194		$	81,003
Asphalt		3,443			2,448
Ready Mixed Concrete		9,926			1,788
Road Paving		(4,231	)		(4,571	)
Total Aggregates Business		119,332			80,668
Specialty Products		42,149			40,866
Corporate		(43	)		(1,717	)
Total	$	161,438		$	119,817

Page 46 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Consolidated SG&A expenses were 7.2% of net sales, down 170 basis points compared with the prior-year period. Similar to the quarterly performance, the decline is primarily attributable to lower pension expense and the absence of the information systems upgrade in 2013.

During the six months ended June 30, 2014, the Corporation incurred $15.0 million of business development and acquisition integration expenses related to a business combination with TXI.

For the first six months, consolidated other operating income and expenses, net, was income of $4.8 million in 2014 compared with income of $2.6 million in 2013, due in part to higher gains on the sale of assets in 2014.

In addition to other offsetting amounts, other nonoperating income and expenses, net, are comprised generally of interest income and net equity earnings from nonconsolidated investments. Consolidated other nonoperating income and expenses, net, for the six months ended June 30 was an expense of $3.2 million in 2014 compared with expense of $0.1 million in 2013, primarily driven by increased losses from nonconsolidated affiliates and higher losses on foreign currency exchange.

LIQUIDITY AND CAPITAL RESOURCES

Cash provided by operating activities for the six months ended June 30, 2014 was $70.4 million compared with $48.5 million for the same period in 2013. The increase was attributable to higher earnings. Operating cash flow is primarily derived from consolidated net earnings before deducting depreciation, depletion and amortization, and the impact of changes in working capital. Depreciation, depletion and amortization were as follows:

	Six Months Ended June 30,
	2014		2013
	(Dollars in Thousands)
Depreciation	$	80,952	$	81,097
Depletion		2,696		2,283
Amortization		2,499		2,612
	$	86,147	$	85,992

The seasonal nature of the construction aggregates business impacts quarterly operating cash flow when compared with the full year. Full-year 2013 net cash provided by operating activities was $309.0 million compared with $48.5 million for the first six months of 2013.

During the six months ended June 30, 2014, the Corporation invested $84.7 million of capital into its business. Full-year capital spending, exclusive of acquisitions, if any, is expected to be approximately $155.0 million in 2014. Comparable full-year capital expenditures were $155.2 million in 2013.

Page 47 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

On April 2, 2014, the Corporation paid $19.6 million for the remaining 50% interest in a joint venture.

The Corporation can repurchase its common stock through open-market purchases pursuant to authority granted by its Board of Directors or through private transactions at such prices and upon such terms as the Chief Executive Officer deems appropriate. The Corporation did not repurchase any shares of common stock during the six months ended June 30, 2014 and 2013. At June 30, 2014, 5,042,000 shares of common stock were remaining under the Corporation’s repurchase authorization.

The Corporation, through a wholly-owned special purpose subsidiary, has a trade receivable securitization facility with SunTrust Bank and certain other lenders that may become a party to the facility from time to time (the “Trade Receivable Facility”). The Trade Receivable Facility is backed by eligible, as defined, trade receivables, which are originated by the Corporation and then sold to the wholly-owned special purpose subsidiary by the Corporation. Although the Corporation expects to extend the facility beyond its current maturity, it has the intent and ability to refinance amounts outstanding using other long-term credit facilities. On April 18, 2014, the Corporation extended the maturity of the Trade Receivable Facility to September 30, 2014. On July 1, 2014, the Trade Receivable Facility was amended to increase the borrowing capacity from $150 million to $250 million.

On June 23, 2014, the Corporation priced its offering of $300,000,000 aggregate principal amount of its Floating Rate Senior Notes due 2017 (the “Floating Rate Notes”) and $400,000,000 of its 4.25% Senior Notes due 2024 (the “4.25% Senior Notes” and together with the Floating Rate Notes, the “Notes”). The bond transaction closed and settlement occurred on July 2, 2014. The proceeds from the offering were used to redeem $650 million of 9.25% notes due in 2020 assumed with TXI plus a make-whole premium and accrued unpaid interest. In connection with the issuance of the Notes, the Corporation entered into an indenture, dated as of July 2, 2014, between the Corporation and Regions Bank, as trustee, and a Registration Rights Agreement, dated as of July 2, 2014, with respect to the Notes, among the Corporation, Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC. The Floating Rate Senior Notes bear interest at a rate equal to the three-month LIBOR plus 1.10% and may not be redeemed prior to maturity. The 4.25% Senior Notes may be redeemed in whole or in part prior to their maturity at a make-whole redemption price.

The Credit Agreement (which consists of a $250 million Term Loan Facility and a $350 million Revolving Facility) 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 month period (the “Ratio”) to not exceed 3.50x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with

Page 48 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

certain acquisitions for a period of 180 days so long as the Corporation, as a consequence of such specified acquisition, does not have its ratings on long-term unsecured debt fall below BBB by Standard & Poor’s or Baa2 by Moody’s and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if there are no amounts outstanding under the Revolving Facility, consolidated debt, including debt for which the Corporation is a co-borrower, will be reduced for purposes of the covenant calculation by the Corporation’s unrestricted cash and cash equivalents in excess of $50 million, such reduction not to exceed $200 million.

The Ratio is calculated as debt, including debt for which the Corporation is a co-borrower, divided by consolidated EBITDA, as defined, for the trailing twelve months. Consolidated EBITDA is generally defined as earnings before interest expense, income tax expense, and depreciation, depletion and amortization expense for continuing operations. Additionally, stock-based compensation expense is added back and interest income is deducted in the calculation of consolidated EBITDA. Certain other nonrecurring noncash items, if they occur, can affect the calculation of consolidated EBITDA.

Effective June 23, 2014, the Corporation amended the Credit Agreement to ensure the impact of the business combination with TXI does not impair liquidity available under the Term Loan Facility and the Revolving Facility. The amendment adjusts consolidated EBITDA to add back fees, costs or expenses relating to the TXI business combination incurred on or prior to the closing of the combination not to exceed $95,000,000; any integration or similar costs or expenses related to the TXI business combination incurred in any period prior to the second anniversary of the closing of the TXI business combination not to exceed $70,000,000; and any make-whole fees incurred in connection with the redemption of TXI’s 9.25% senior notes due 2020. The amendment also temporarily increases the maximum Ratio to 3.75x at September 30, 2014. The Ratio returns to the pre-amendment maximum of 3.50x for the December 31, 2014 calculation date.

The Corporation expects to make cash payments of approximately $195,000,000 during the second half of the year for business development expenses, acquisition integration expenses and the make-whole premium to redeem the publicly traded debt assumed with TXI.

Page 49 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

At June 30, 2014, the Corporation’s ratio of consolidated debt to consolidated EBITDA, as defined, for the trailing twelve months EBITDA was 2.49 times and was calculated as follows:

	Twelve Month Period July 1, 2013 to June 30, 2014
	(Dollars in thousands)
Earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	146,409
Add back:
Interest expense		51,501
Income tax expense		52,759
Depreciation, depletion and amortization expense		171,578
Stock-based compensation expense		7,397
Business development expenses related to the business combination with TXI		14,182
Acquisition integration expenses related to the business combination with TXI		2,210
Deduct:
Interest income		(491	)
Consolidated EBITDA, as defined	$	445,545
Consolidated debt, including debt for which the Corporation is a co-borrower, at June 30, 2014	$	1,108,248
Consolidated debt to consolidated EBITDA, as defined, at June 30, 2014 for the trailing twelve months EBITDA		2.49x

The Trade Receivable Facility contains a cross-default provision to the Corporation’s other debt agreements. In the event of a default on the Ratio, the lenders can terminate the Credit Agreement and Trade Receivable Facility and declare any outstanding balances as immediately due.

Cash on hand, along with the Corporation’s projected internal cash flows and availability of financing resources, including its access to debt and equity capital markets, is expected to continue to be sufficient to provide the capital resources necessary to support anticipated operating needs, cover debt service requirements, meet capital expenditures and discretionary investment needs, fund certain acquisition opportunities that may arise and allow for payment of dividends for the foreseeable future. At June 30, 2014, the Corporation had $307 million of unused borrowing capacity under its Revolving Facility, subject to complying with the related leverage covenant. The Revolving Facility expires on November 29, 2018.

Page 50 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

The Corporation may be required to obtain financing to fund certain strategic acquisitions, if any such opportunities arise, or to refinance outstanding debt. Any strategic acquisition of size for cash would likely require an appropriate balance of newly-issued equity with debt in order to maintain a composite investment-grade credit rating. Furthermore, the Corporation is exposed to the credit markets, through the interest cost related to its variable-rate debt, which included borrowings under its Revolving Facility, Term Loan Facility and Trade Receivable Facility at June 30, 2014. The Corporation is currently rated by three credit rating agencies; two of those agencies’ credit ratings are investment-grade level and the third agency’s credit rating is one level below investment grade. The Corporation’s composite credit rating remains at investment-grade level, which facilitates obtaining financing at lower rates than noninvestment-grade ratings.

TRENDS AND RISKS The Corporation outlined the risks associated with its business in its Annual Report on Form 10-K for the year ended December 31, 2013. Management continues to evaluate its exposure to all operating risks on an ongoing basis.

OUTLOOK

The Corporation is encouraged by various positive trends in its business and markets, notably:

• Nonresidential construction is expected to grow in both the heavy industrial and commercial sectors.

• Shale development and related follow-on public and private construction activities are anticipated to remain strong.

• The commercial building sector is expected to benefit from improved market fundamentals, such as higher occupancies and rents, strengthened property values and increased real estate lending.

• Residential construction should continue to grow, driven by historically low levels of construction activity over the previous several years together with low mortgage rates, higher multi-family rental rates and rising housing prices. Total annual housing starts are anticipated to exceed one million units for the first time since 2007.

• For the public sector, authorized highway funding from MAP-21 should increase slightly compared with 2013.

• Additionally, state initiatives to finance infrastructure projects are expected to grow and continue to play an expanded role in public-sector activity.

Page 51 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

Based on these trends and expectations, the Corporation anticipates the following, which excludes the impact of the TXI acquisition:

• Heritage aggregates end-use markets compared to 2013 levels: infrastructure shipments to increase slightly; nonresidential shipments to increase in the high single digits; residential shipments to experience double-digit growth; and ChemRock/Rail shipments to increase in the mid-to-high single digits.

• Heritage aggregates product line shipments to increase by 6% to 8% compared with 2013 levels.

• Heritage aggregates product line pricing to increase by 3% to 5% for the year compared with 2013.

• Heritage aggregates product line direct production cost per ton to decrease slightly compared with 2013.

• Heritage vertically integrated businesses to generate between $385 million and $405 million of net sales and $40 million to $45 million of gross profit.

• Heritage SG&A expenses as a percentage of net sales to decline compared with 2013, driven in part by $7.9 million of nonrecurring costs related primarily to the 2013 completion of the Corporation’s information systems upgrade, as well as lower pension costs.

• Net sales for the Specialty Products segment to be between $225 million and $235 million, generating $85 million to $90 million of gross profit.

• Interest expense to remain relatively flat compared with 2013.

• Estimated effective income tax rate to approximate 29%, excluding discrete events.

• Capital expenditures to approximate $155 million.

The full-year outlook includes management’s assessment of the likelihood of certain risk factors that will affect performance. The most significant risks to the Corporation’s 2014 performance will be Congress’ actions and timing surrounding the expiration of MAP-21 and uncertainty over the funding mechanism for the Highway Trust Fund. Further, additional government shutdown(s) and the impact of The Patient Protection and Affordable Care Act may further erode consumer confidence, which may negatively impact investment in construction projects. While both MAP-21 and The Transportation Infrastructure Finance and Innovation Act (TIFIA) credit assistance are excluded from the U.S. debt ceiling limit, this issue may have a significant impact on the economy and, consequently, construction activity. Other risks related to the Corporation’s future performance include, but are not limited to, both price and volume and include a recurrence of widespread decline in aggregates volume negatively affecting aggregates price; the termination, capping and/or reduction of the federal and/or state gasoline tax(es) or other revenue related to infrastructure construction; a significant change in the funding patterns for traditional federal, state and/or local infrastructure projects; a reduction in defense spending, and the subsequent impact on construction activity on or near military bases; a decline in nonresidential construction, a decline in energy-related drilling activity resulting from certain regulatory or economic factors, a slowdown in the

Page 52 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

residential construction recovery, or some combination thereof; a reduction in economic activity in the Corporation’s Midwest states resulting from reduced funding levels provided by the Agricultural Act of 2014 and declining coal traffic on the railroads; and the possibility that expected synergies and operating efficiencies in connection with the TXI acquisition are not realized within the expected time-frames or at all. Further, increased highway construction funding pressures resulting from either federal or state issues can affect profitability. If these negatively affect transportation budgets more than in the past, construction spending could be reduced. North Carolina, a state that disproportionately affects the Corporation’s revenue and profitability, is among the states experiencing these fiscal pressures, although recent statistics indicate that transportation and tax revenues are increasing. The Specialty Products business essentially runs at capacity; therefore any unplanned changes in costs or realignment of customers introduce volatility to the earnings of this segment.

The Corporation’s principal business serves customers in aggregates-related construction markets. This concentration could increase the risk of potential losses on customer receivables; however, payment bonds normally posted on public projects, together with lien rights on private projects, help to mitigate the risk of uncollectible receivables. The level of aggregates demand in the Corporation’s end-use markets, production levels and the management of production costs will affect the operating leverage of the Aggregates business and, therefore, profitability. Production costs in the Aggregates business are also sensitive to energy and raw material prices, both directly and indirectly. Diesel fuel and other consumables change production costs directly through consumption or indirectly by increased energy-related input costs, such as steel, explosives, tires and conveyor belts. Fluctuating diesel fuel pricing also affects transportation costs, primarily through fuel surcharges in the Corporation’s long-haul distribution network. The Specialty Products business is sensitive to changes in domestic steel capacity utilization and the absolute price and fluctuations in the cost of natural gas.

Transportation in the Corporation’s long-haul network, particularly the supply of rail cars and locomotive power to move trains, affects the Corporation’s ability to efficiently transport material into certain markets, most notably Texas, Florida and the Gulf Coast. The availability of trucks and drivers to transport the Corporation’s product, particularly in markets experiencing increased demand due to energy-sector activity, is also a risk. The Aggregates business is also subject to weather-related risks that can significantly affect production schedules and profitability. The first and fourth quarters are most adversely affected by winter weather. Hurricane activity in the Atlantic Ocean and Gulf Coast generally is most active during the third and fourth quarters.

Risks to the outlook include shipment declines as a result of economic events beyond the Corporation’s control. In addition to the impact on nonresidential and residential construction, the Corporation is exposed to risk in its estimated outlook from credit markets and the availability of and interest cost related to its debt.

Page 53 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

The Corporation’s future performance is also exposed to risks from tax reform at the federal and state levels.

OTHER MATTERS If you are interested in Martin Marietta Materials, Inc. stock, management recommends that, at a minimum, you read the Corporation’s current Annual Report and Forms 10-K, 10-Q and 8-K reports to the Securities and Exchange Commission (SEC) over the past year. The Corporation’s recent proxy statement for the annual meeting of shareholders also contains important information. These and other materials that have been filed with the SEC are accessible through the Corporation’s website at www.martinmarietta.com and are also available at the SEC’s website at www.sec.gov. You may also write or call the Corporation’s Corporate Secretary, who will provide copies of such reports.

Investors are cautioned that all statements in this Form 10-Q that relate to the future involve risks and uncertainties, and are based on assumptions that the Corporation believes in good faith are reasonable but which may be materially different from actual results. Forward-looking statements give the investor management’s expectations or forecasts of future events. You can identify these statements by the fact that they do not relate only to historical or current facts. They may use words such as “anticipate,” “expect,” “should be,” “believe,” “will”, and other words of similar meaning in connection with future events or future operating or financial performance. Any or all of our forward-looking statements here and in other publications may turn out to be wrong.

Factors that the Corporation currently believes could cause actual results to differ materially from the forward-looking statements in this Form 10-Q include, but are not limited to, Congress’ actions and timing surrounding the expiration of MAP-21 and uncertainty over the funding mechanism for the Highway Trust Fund; the performance of the United States economy and the resolution and impact of the debt ceiling and sequestration issues; widespread decline in aggregates pricing; the termination, capping and/or reduction of the federal and/or state gasoline tax(es) or other revenue related to infrastructure construction; the level and timing of federal and state transportation funding, most particularly in North Carolina, one of the Corporation’s largest and most profitable states, and Texas, Iowa, Colorado and Georgia; the ability of states and/or other entities to finance approved projects either with tax revenues or alternative financing structures; levels of construction spending in the markets the Corporation serves; a reduction in defense spending, and the subsequent impact on construction activity on or near military bases; a decline in the commercial component of the nonresidential construction market, notably office and retail space; a slowdown in energy-related drilling activity; a slowdown in residential construction recovery; a reduction in shipments due to a decline in funding under the domestic farm bill; unfavorable weather conditions, particularly Atlantic Ocean hurricane activity, the late start to spring or the early onset of winter and the impact of a drought or excessive rainfall in the markets served by the Corporation; the volatility of fuel costs, particularly diesel fuel, and the impact on the cost of other consumables, namely steel, explosives, tires and conveyor belts, and with respect to the Specialty Products business,

Page 54 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

natural gas; continued increases in the cost of other repair and supply parts; transportation availability, notably the availability of railcars and locomotive power to move trains to supply the Corporation’s Texas, Florida and Gulf Coast markets; increased transportation costs, including increases from higher passed-through energy and other costs to comply with tightening regulations as well as higher volumes of rail and water shipments; availability and cost of construction equipment in the United States; weakening in the steel industry markets served by the Corporation’s dolomitic lime products; inflation and its effect on both production and interest costs; ability to successfully integrate acquisitions quickly and in a cost-effective manner and achieve anticipated profitability to maintain compliance with the Corporation’s leverage ratio debt covenant; changes in tax laws, the interpretation of such laws and/or administrative practices that would increase the Corporation’s tax rate; violation of the Corporation’s debt covenant if price and/or volumes return to previous levels of instability; downward pressure on the Corporation’s common stock price and its impact on goodwill impairment evaluations; reduction of the Corporation’s credit rating to non-investment grade resulting from strategic acquisitions; and other risk factors listed from time to time found in the Corporation’s filings with the SEC. Other factors besides those listed here may also adversely affect the Corporation, and may be material to the Corporation. The Corporation assumes no obligation to update any such forward-looking statements.

In connection with the business combination with TXI, the Corporation has filed with the SEC a Registration Statement on Form S-8 on July 2, 2014.

Page 55 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Second Quarter Ended June 30, 2014

(Continued)

INVESTOR ACCESS TO COMPANY FILINGS Shareholders may obtain, without charge, a copy of Martin Marietta Materials, Inc.’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission for the fiscal year ended December 31, 2013, by writing to:

Martin Marietta Materials, Inc.

Attn: Corporate Secretary

2710 Wycliff Road

Raleigh, North Carolina 27607-3033

Additionally, Martin Marietta Materials, Inc.’s Annual Report, press releases and filings with the Securities and Exchange Commission, including Forms 10-K, 10-Q, 8-K and 11-K, can generally be accessed via the Corporation’s website. Filings with the Securities and Exchange Commission accessed via the website are available through a link with the Electronic Data Gathering, Analysis, and Retrieval (“EDGAR”) system. Accordingly, access to such filings is available upon EDGAR placing the related document in its database. Investor relations contact information is as follows:

Telephone: (919) 783-4540

Website address: www.martinmarietta.com

Information included on the Corporation’s website is not incorporated into, or otherwise create a part of, this report.

Page 56 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

The Corporation’s operations are highly dependent upon the interest rate-sensitive construction and steelmaking industries. Consequently, these marketplaces could experience lower levels of economic activity in an environment of rising interest rates or escalating costs.

Management has considered the current economic environment and its potential impact to the Corporation’s business. Demand for aggregates products, particularly in the infrastructure construction market, has already been negatively affected by federal and state budget and deficit issues and the uncertainty over future highway funding levels beyond the expiration of MAP-21. Further, delays or cancellations to capital projects in the nonresidential and residential construction markets could occur if companies and consumers are unable to obtain financing for construction projects or if consumer confidence continues to be eroded by economic uncertainty.

Demand in the residential construction market is affected by interest rates. The Federal Reserve kept the federal funds rate near zero percent during the six months ended June 30, 2014, unchanged since 2008. The residential construction market accounted for 14% of the Corporation’s aggregates product line shipments in 2013.

Aside from these inherent risks from within its operations, the Corporation’s earnings are also affected by changes in short-term interest rates. However, rising interest rates are not necessarily predictive of weaker operating results. In fact, since 2007, the Corporation’s profitability increased when interest rates rose, based on the last twelve months quarterly historical net income regression versus a 10-year U.S. government bond. In essence, the Corporation’s underlying business generally serves as a natural hedge to rising interest rates.

Variable-Rate Borrowing Facilities. At June 30, 2014, the Corporation had a $600 million Credit Agreement, comprised of a $350 million Revolving Facility and $250 million Term Loan Facility, and a $250 million Trade Receivable Facility. Borrowings under these facilities bear interest at a variable interest rate. A hypothetical 100-basis-point increase in interest rates on borrowings of $432.4 million, which was the collective outstanding balance at June 30, 2014, would increase interest expense by $4.3 million on an annual basis.

Pension Expense. The Corporation’s results of operations are affected by its pension expense. Assumptions that affect pension expense include the discount rate and, for the defined benefit pension plans only, the expected long-term rate of return on assets. Therefore, the Corporation has interest rate risk associated with these factors. The impact of hypothetical changes in these assumptions on the Corporation’s annual pension expense is discussed in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2013.

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

Energy Costs. Energy costs, including diesel fuel, natural gas, coal and liquid asphalt, represent significant production costs of the Corporation. The Corporation does not hedge its diesel fuel price risk. The Specialty Products business has fixed price agreements covering all of its 2014 coal requirements. A hypothetical 10% change in the Corporation’s energy prices in 2014 as compared with 2013, assuming constant volumes, would change 2014 pretax earnings by $19.9 million.

Item 4. Controls and Procedures

As of June 30, 2014, an evaluation was performed under the supervision and with the participation of the Corporation’s management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and the operation of the Corporation’s disclosure controls and procedures. Based on that evaluation, the Corporation’s management, including the Chief Executive Officer and Chief Financial Officer, concluded that the Corporation’s disclosure controls and procedures were effective as of June 30, 2014. There were no changes in the Corporation’s internal control over financial reporting during the most recently completed fiscal quarter that materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

Page 58 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

PART II-OTHER INFORMATION

Item 1. Legal Proceedings.

Reference is made to Part I. Item 3. Legal Proceedings of the Martin Marietta Materials, Inc. Annual Report on Form 10-K for the year ended December 31, 2013.

Item 1A. Risk Factors.

Reference is made to Part I. Item 1A. Risk Factors and Forward-Looking Statements of the Martin Marietta Materials, Inc. Annual Report on Form 10-K for the year ended December 31, 2013.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

ISSUER PURCHASES OF EQUITY SECURITIES

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares that May Yet be Purchased Under the Plans or Programs
April 1, 2014 –April 30, 2014		—	$	—		—		5,041,871
May 1, 2014 – May 31, 2014		—	$	—		—		5,041,871
June 1, 2014 – June 30, 2014		—	$	—		—		5,041,871
Total		—	$	—		—		5,041,871

The Corporation’s initial stock repurchase program, which authorized the repurchase of 2.5 million shares of common stock, was announced in a press release dated May  6, 1994, and has been updated as appropriate. The program does not have an expiration date.

Item 4. Mine Safety Disclosures.

The information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 CFR 229.104) is included in Exhibit 95 to this Quarterly Report on Form 10-Q.

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

PART II-OTHER INFORMATION

(Continued)

Item 6. Exhibits.

Exhibit No.	Document
31.01	Certification dated August 4, 2014 of Chief Executive Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.02	Certification dated August 4, 2014 of Chief Financial Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.01	Written Statement dated August 4, 2014 of Chief Executive Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.02	Written Statement dated August 4, 2014 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
95	Mine Safety Disclosures
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase

Page 60 of 62

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	MARTIN MARIETTA MATERIALS, INC.
	(Registrant)
Date: August 4, 2014	By:	/s/ Anne H. Lloyd
		Anne H. Lloyd
		Executive Vice President and Chief Financial Officer

Page 61 of 62

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended June 30, 2014

EXHIBIT INDEX

Exhibit No.	Document
31.01	Certification dated August 4, 2014 of Chief Executive Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.02	Certification dated August 4, 2014 of Chief Financial Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.01	Written Statement dated August 4, 2014 of Chief Executive Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.02	Written Statement dated August 4, 2014 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
95	Mine Safety Disclosures
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase

Page 62 of 62

EX-31.01

EXHIBIT 31.01

CERTIFICATION PURSUANT TO SECURITIES AND EXCHANGE ACT OF 1934 RULE 13a-14 AS ADOPTED PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002

I, C. Howard Nye, certify that:

1. I have reviewed this Form 10-Q of Martin Marietta Materials, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 4, 2014	By:	/s/ C. Howard Nye
		C. Howard Nye
		President and Chief Executive Officer

EX-31.02

EXHIBIT 31.02

CERTIFICATION PURSUANT TO SECURITIES AND EXCHANGE ACT OF 1934 RULE 13a-14 AS ADOPTED PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002

I, Anne H. Lloyd, certify that:

1. I have reviewed this Form 10-Q of Martin Marietta Materials, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 4, 2014	By:	/s/ Anne H. Lloyd
	Anne H. Lloyd
	Executive Vice President and Chief Financial Officer

EX-32.01

EXHIBIT 32.01

Written Statement Pursuant to 18 U.S.C. 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q for the period ended June 30, 2014 (the “Report”) of Martin Marietta Materials, Inc. (the “Registrant”), as filed with the Securities and Exchange Commission on the date hereof, I, C. Howard Nye, the Chief Executive Officer of the Registrant, certify, to the best of my knowledge, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ C. Howard Nye

C. Howard Nye

Chief Executive Officer

Dated: August 4, 2014

A signed original of this written statement required by Section 906 has been provided to Martin Marietta Materials, Inc. and will be retained by Martin Marietta Materials, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.02

EXHIBIT 32.02

Written Statement Pursuant to 18 U.S.C. 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q for the period ended June 30, 2014 (the “Report”) of Martin Marietta Materials, Inc. (the “Registrant”), as filed with the Securities and Exchange Commission on the date hereof, I, Anne H. Lloyd, the Chief Financial Officer of the Registrant, certify, to the best of my knowledge, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ Anne H. Lloyd

Anne H. Lloyd

Executive Vice President and Chief Financial Officer

Dated: August 4, 2014

A signed original of this written statement required by Section 906 has been provided to Martin Marietta Materials, Inc. and will be retained by Martin Marietta Materials, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-95

EXHIBIT 95

MINE SAFETY DISCLOSURES

The operation of the Corporation’s domestic aggregates quarries and mines is subject to regulation by the federal Mine Safety and Health Administration (MSHA) under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). MSHA inspects the Corporation’s quarries and mines on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. Whenever MSHA issues a citation or order, it also generally proposes a civil penalty, or fine, related to the alleged violation. Citations or orders may be contested and appealed, and as part of that process, are often reduced in severity and amount, and are sometimes dismissed.

Under the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”), the Corporation is required to present information regarding certain mining safety and health citations which MSHA has issued with respect to its aggregates mining operations in its periodic reports filed with the Securities and Exchange Commission (SEC). In evaluating this information, consideration should be given to factors such as: (i) the number of citations and orders will vary depending on the size of the quarry or mine and types of operations (underground or surface), (ii) the number of citations issued will vary from inspector to inspector and location to location, and (iii) citations and orders can be contested and appealed, and in that process, may be reduced in severity and amount, and are sometimes dismissed.

The Corporation has provided the information below in response to the SEC’s rules and regulations issued under the provisions of the Dodd-Frank Act. The disclosures reflect U.S. mining operations only, as the requirements of the Dodd-Frank Act and the SEC rules and regulations thereunder do not apply to the Corporation’s quarries and mines operated outside the United States.

The Corporation presents the following items regarding certain mining safety and health matters for the three months ended June 30, 2014:

• Total number of violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard under section 104 of the Mine Act for which the Corporation has received a citation from MSHA (hereinafter, “Section 104 S&S Citations”). If MSHA determines that a violation of a mandatory health or safety standard is likely to result in a reasonably serious injury or illness under the unique circumstance contributed to by the violation, MSHA will classify the violation as a “significant and substantial” violation (commonly referred to as a “S&S” violation). MSHA inspectors will classify each citation or order written as a “S&S” violation or not.

• Total number of orders issued under section 104(b) of the Mine Act (hereinafter, “Section 104(b) Orders”). These orders are issued for situations in which MSHA determines a previous violation covered by a Section 104(a) citation has not been totally abated within the prescribed time period, so a further order is needed to require the mine operator to immediately withdraw all persons (except authorized persons) from the affected area of a quarry or mine.

• Total number of citations and orders for unwarrantable failure of the mine operator to comply with mandatory health or safety standards under Section 104(d) of the Mine Act (hereinafter, “Section 104(d) Citations and Orders”). These violations are similar to those described above, but the standard is that the violation could significantly and substantially contribute to the cause and effect of a safety or health hazard, but the conditions do not cause imminent danger, and the MSHA inspector finds that the violation is caused by an unwarranted failure of the operator to comply with the health and safety standards.

• Total number of flagrant violations under section 110(b)(2) of the Mine Act (hereinafter, “Section 110(b)(2) Violations”). These violations are penalty violations issued if MSHA determines that violations are “flagrant”, for which civil penalties may be assessed. A “flagrant” violation means a reckless or repeated failure to make reasonable efforts to eliminate a known violation of a mandatory health or safety standard that substantially and proximately caused, or reasonably could have been expected to cause, death or serious bodily injury.

• Total number of imminent danger orders issued under section 107(a) of the Mine Act (hereinafter, “Section 107(a) Orders”). These orders are issued for situations in which MSHA determines an imminent danger exists in the quarry or mine and results in orders of immediate withdrawal of all persons (except certain authorized persons) from the area of the quarry or mine affected by its condition until the imminent danger and the underlying conditions causing the imminent danger no longer exist.

• Total dollar value of proposed assessments from MSHA under the Mine Act. These are the amounts of proposed assessments issued by MSHA with each citation or order for the time period covered by the reports. Penalties are assessed by MSHA according to a formula that considers a number of factors, including the mine operator’s history, size, negligence, gravity of the violation, good faith in trying to correct the violation promptly, and the effect of the penalty on the operator’s ability to continue in business.

• Total number of mining-related fatalities. Mines subject to the Mine Act are required to report all fatalities occurring at their facilities unless the fatality is determined to be “non-chargeable” to the mining industry. The final rules of the SEC require disclosure of mining-related fatalities at mines subject to the Mine Act. Only fatalities determined by MSHA not to be mining-related may be excluded.

• Receipt of written notice from MSHA of a pattern (or a potential to have such a pattern) of violations of mandatory health or safety standards that are of such nature as could have significantly and substantially contributed to the cause and effect of other mine health or safety hazards under Section 104(e) of the Mine Act. If MSHA determines that a mine has a “pattern” of these types of violations, or the potential to have such a pattern, MSHA is required to notify the mine operator of the existence of such a thing.

• Legal actions before the Federal Mine Safety and Health Review Commissions pending as of the last day of period.

• Legal actions before the Federal Mine Safety and Health Review Commissions initiated during period.

• Legal actions before the Federal Mine Safety and Health Review Commissions resolved during period.

The Federal Mine Safety and Health Review Commission (the “Commission”) is an independent adjudicative agency that provides administrative trial and appellate review of legal disputes arising under the Mine Act. The cases may involve, among other questions, challenges by operators to citations, orders and penalties they have received from MSHA, or complaints of discrimination by miners under Section 105 of the Mine Act. Appendix 1 shows, for each of the Corporation’s quarries and mines identified, as of June 30, 2014, the number of legal actions pending before the Commission, along with the number of legal actions initiated before the Commission during the quarter as well as resolved during the quarter. In addition, Appendix 1 includes a footnote to the column for legal actions before the Commission pending as of the last day of the period, which footnote breaks down that total number of legal actions pending by categories according to the type of proceeding in accordance with various categories established by the Procedural Rules of the Commission.

Appendix 1 attached.

Appendix 1

Location	MSHA ID		Section 104 S&S Citations (#)		Section 104(b) Orders (#)		Section 104(d) Citations and Orders (#)		Section 110(b)(2) Violations (#)		Section 107(a) Orders (#)		Total Dollar Value of MSHA Assessment/ $ Proposed		Total Number of Mining Related Fatalities (#)		Received Notice of Pattern of Violation Under Section 104(e) (yes/no)		Received Notice of Potential to have Pattern under Section 104(e) (yes/no)		Legal Actions Pending as of Last Day of Period (#)*		Legal Actions Instituted During Period (#)		Legal Actions Resolved During Period (#)
Anderson Creek		4402963		0		0		0		0		0	$	0		0		no		no		0		0		0
Boonsboro Quarry		1800024		0		0		0		0		0	$	0		0		no		no		0		0		0
Carmel Church Quarry		4405633		0		0		0		0		0	$	0		0		no		no		0		0		0
Doswell Quarry		4400045		1		0		0		0		0	$	2,773		0		no		no		0		0		0
Midlothian Quarry		4403767		0		0		0		0		0	$	0		0		no		no		0		0		0
Pinesburg		1800021		0		0		0		0		0	$	0		0		no		no		0		0		0
Red Hill Quarry		4400072		0		0		0		0		0	$	0		0		no		no		0		0		0
American Stone Quarry		3100189		0		0		0		0		0	$	217		0		no		no		0		0		0
Belgrade Quarry		3100064		0		0		0		0		0	$	0		0		no		no		0		0		0
Benson Quarry		3101979		0		0		0		0		0	$	0		0		no		no		0		0		0
Castle Hayne Quarry		3100063		0		0		0		0		0	$	100		0		no		no		0		0		0
Clarks Quarry		3102009		0		0		0		0		0	$	0		0		no		no		0		0		0
Cumberland Quarry		3102237		0		0		0		0		0	$	0		0		no		no		0		0		0
Fountain Quarry		3100065		0		0		0		0		0	$	0		0		no		no		0		0		0
Franklin Quarry		3102130		0		0		0		0		0	$	0		0		no		no		0		0		0
Fuquay Quarry		3102055		0		0		0		0		0	$	0		0		no		no		0		0		0
Garner Quarry		3100072		0		0		0		0		0	$	0		0		no		no		6		0		0
Lemon Springs Quarry		3101104		0		0		0		0		0	$	100		0		no		no		0		0		0
Onslow Quarry		3102120		0		0		0		0		0	$	0		0		no		no		0		0		0
Raleigh Durham Quarry		3101941		0		0		0		0		0	$	0		0		no		no		0		0		0
Wilson Quarry		3102230		0		0		0		0		0	$	0		0		no		no		0		0		0
Alexander Quarry		BN5		0		0		0		0		0	$	0		0		no		no		0		0		0
Asheboro Quarry		3100066		0		0		0		0		0	$	0		0		no		no		0		0		0
Black Ankle Quarry		3102220		0		0		0		0		0	$	0		0		no		no		0		0		0
Burlington Quarry		3100042		0		0		0		0		0	$	0		0		no		no		0		0		0
Caldwell Quarry		3101869		0		0		0		0		0	$	200		0		no		no		2		0		0
Central Rock Quarry		3100050		0		0		0		0		0	$	100		0		no		no		0		0		0
Denver		3101971		0		0		0		0		0	$	0		0		no		no		0		0		0
East Alamance		3102021		0		0		0		0		0	$	0		0		no		no		0		0		0
Hickory Quarry		3100043		0		0		0		0		0	$	0		0		no		no		0		0		0
Hicone Quarry		3102088		0		0		0		0		0	$	0		0		no		no		0		0		0
Jamestown Quarry		3100051		0		0		0		0		0	$	100		0		no		no		0		0		0
Kannapolis Quarry		3100070		0		0		0		0		0	$	0		0		no		no		0		0		0
Maiden Quarry		3102125		0		0		0		0		0	$	108		0		no		no		0		0		0
Pomona Quarry		3100052		0		0		0		0		0	$	0		0		no		no		0		0		0
Reidsville Quarry		3100068		0		0		0		0		0	$	434		0		no		no		0		0		0
Salem Stone Company		3102038		0		0		0		0		0	$	0		0		no		no		0		0		0
Siler City Quarry		3100044		0		0		0		0		0	$	0		0		no		no		0		0		0
Statesville Quarry		3100055		0		0		0		0		0	$	0		0		no		no		0		0		0
Thomasville Quarry		3101475		0		0		0		0		0	$	0		0		no		no		0		0		0
Woodleaf Quarry		3100069		0		0		0		0		0	$	0		0		no		no		0		0		0
Arrowood Quarry		3100059		0		0		0		0		0	$	0		0		no		no		0		0		0
Bakers Quarry		3100071		0		0		0		0		0	$	0		0		no		no		0		0		0
Berkeley Quarry		3800072		0		0		0		0		0	$	0		0		no		no		0		0		0
Bessemer City Quarry		3101105		0		0		0		0		0	$	0		0		no		no		0		0		0
Bonds Gravel Pit		3101963		0		0		0		0		0	$	0		0		no		no		0		0		0

Cayce Quarry	3800016	0	0	0	0	0	$	0	0	no	no	0	0	1
Charlotte Quarry	3100057	0	0	0	0	0	$	0	0	no	no	0	0	0
Chesterfield Quarry	3800682	0	0	0	0	0	$	0	0	no	no	0	0	0
Georgetown ll Quarry	3800525	1	0	0	0	0	$	385	0	no	no	0	0	0
Kings Mountain Quarry	3100047	0	0	0	0	0	$	0	0	no	no	0	0	0
Loamy Sand and Gravel	3800721	0	0	0	0	0	$	0	0	no	no	0	0	0
Mallard Creek Quarry	3102006	0	0	0	0	0	$	0	0	no	no	0	0	0
Matthews Quarry	3102084	1	0	0	0	0	$	0	0	no	no	0	0	0
North Columbia Quarry	3800146	0	0	0	0	0	$	100	0	no	no	0	0	0
Rock Hill Quarry	3800026	0	0	0	0	0	$	0	0	no	no	3	0	0
Rocky River Quarry	3102033	0	0	0	0	0	$	0	0	no	no	0	0	0
(45) North Indianapolis SURFACE	1200002	1	0	0	0	0	$	390	0	no	no	0	0	0
Belmont Sand	1201911	0	0	0	0	0	$	0	0	no	no	0	0	0
Carmel SandG	1202124	0	0	0	0	0	$	0	0	no	no	0	0	0
Cloverdale	1201744	0	0	0	0	0	$	0	0	no	no	0	0	0
Kentucky Ave Mine	1201762	1	0	0	0	0	$	0	0	no	no	0	0	0
Kokomo Mine	1202105	0	0	0	0	0	$	0	0	no	no	0	0	0
Kokomo Sand	1202203	0	0	0	0	0	$	0	0	no	no	0	0	0
Kokomo Stone	1200142	0	0	0	0	0	$	0	0	no	no	0	0	0
Noblesville SandG	1201994	0	0	0	0	0	$	0	0	no	no	0	0	0
Noblesville Stone	1202176	0	0	0	0	0	$	100	0	no	no	0	0	0
North Indianapolis	1201993	1	0	0	0	0	$	0	0	no	no	0	0	0
Waverly Sand	1202038	0	0	0	0	0	$	100	0	no	no	0	0	0
Apple Grove	3301676	0	0	0	0	0	$	0	0	no	no	0	0	0
Blue Rock	3300016	0	0	0	0	0	$	0	0	no	no	0	0	0
Burning Springs	4608862	0	0	0	0	0	$	0	0	no	no	0	0	4
Cedarville	3304072	0	0	0	0	0	$	0	0	no	no	0	0	0
Clinton County	3304546	0	0	0	0	0	$	0	0	no	no	0	0	0
Cook Road	3304534	0	0	0	0	0	$	0	0	no	no	0	0	0
E-Town SandG	3304279	0	0	0	0	0	$	0	0	no	no	0	0	0
Fairborn Gravel	3301388	0	0	0	0	0	$	0	0	no	no	0	0	0
Fairfield	3301396	0	0	0	0	0	$	0	0	no	no	0	0	0
Franklin Gravel	3302940	0	0	0	0	0	$	0	0	no	no	0	0	0
Hamilton Gravel	3301394	0	0	0	0	0	$	0	0	no	no	0	0	0
Harrison	3301395	0	0	0	0	0	$	0	0	no	no	0	0	0
Lynchburg Quarry	3304281	0	0	0	0	0	$	0	0	no	no	0	0	0
Ohio Recycle	3304394	0	0	0	0	0	$	0	0	no	no	0	0	0
Petersburg	1516895	0	0	0	0	0	$	0	0	no	no	0	0	0
Phillipsburg	3300006	0	0	0	0	0	$	100	0	no	no	0	0	0
Ross Gravel	3301587	0	0	0	0	0	$	0	0	no	no	0	0	0
Troy Gravel	3301678	0	0	0	0	0	$	0	0	no	no	0	0	0
Xenia	3301393	0	0	0	0	0	$	0	0	no	no	0	0	0
Appling Quarry	901083	0	0	0	0	0	$	0	0	no	no	0	0	0
Augusta Quarry-GA	900065	0	0	0	0	0	$	0	0	no	no	1	0	0
Cabbage Grove Quarry	800008	0	0	0	0	0	$	0	0	no	no	0	0	0
Camak Quarry	900075	0	0	0	0	0	$	117	0	no	no	0	0	0
Junction City Quarry	901029	0	0	0	0	0	$	0	0	no	no	0	0	0
Morgan Co Quarry	901126	0	0	0	0	0	$	0	0	no	no	0	0	0
Perry Quarry	801083	0	0	0	0	0	$	0	0	no	no	0	0	0
Ruby Quarry	900074	0	0	0	0	0	$	0	0	no	no	0	0	0
Warrenton Quarry	900580	0	0	0	0	0	$	0	0	no	no	0	0	0
Auburn, GA Quarry	900436	0	0	0	0	0	$	0	0	no	no	0	0	0
Chattanooga Quarry	4003159	0	0	0	0	0	$	100	0	no	no	1	1	2
Forsyth Quarry	901035	0	0	0	0	0	$	0	0	no	no	0	0	0
Jefferson Quarry	901106	0	0	0	0	0	$	0	0	no	no	0	0	0
Lithonia Quarry	900023	1	0	0	0	0	$	0	0	no	no	0	0	0

Newton Quarry	900899	0	0	0	0	0	$	300	0	no	no	0	0	0
Paulding Quarry	901107	0	0	0	0	0	$	100	0	no	no	0	0	0
Red Oak Quarry	900069	0	0	0	0	0	$	0	0	no	no	0	0	0
Six Mile Quarry	901144	0	0	0	0	0	$	0	0	no	no	0	0	0
Tyrone Quarry	900306	0	0	0	0	0	$	0	0	no	no	0	0	0
Alabaster Quarry Co19	103068	0	0	0	0	0	$	0	0	no	no	0	0	0
Auburn, Al Quarry	100006	0	0	0	0	0	$	127	0	no	no	0	0	0
Birmingham Shop	102096	0	0	0	0	0	$	0	0	no	no	0	0	0
Maylene Quarry	100634	0	0	0	0	0	$	0	0	no	no	0	0	0
ONeal Quarry Co19	103076	0	0	0	0	0	$	0	0	no	no	0	0	0
R-S Sand and Gravel	2200381	0	0	0	0	0	$	0	0	no	no	1	0	0
Shorter Sand and Gravel	102852	0	0	0	0	0	$	0	0	no	no	0	0	0
Vance Quarry Co19	103022	0	0	0	0	0	$	0	0	no	no	1	0	0
Alden Portable Sand	1302037	0	0	0	0	0	$	0	0	no	no	0	0	0
Alden Portable Plant 1	1302031	0	0	0	0	0	$	0	0	no	no	0	0	0
Alden Portable Plant 2	1302033	0	0	0	0	0	$	0	0	no	no	3	1	0
Alden Portable Wash	1302122	0	0	0	0	0	$	0	0	no	no	0	0	0
Alden Quarry - Shop	1300228	3	0	0	0	0	$	4,638	0	no	no	0	0	0
Alden Shop	1302320	0	0	0	0	0	$	0	0	no	no	0	0	0
Beaver Lake Quarry	4503347	0	0	0	0	0	$	0	0	no	no	0	0	0
Fort Dodge Mine	1300032	0	0	0	0	0	$	1,376	0	no	no	1	1	0
Moore Quarry	1302188	1	0	0	0	0	$	774	0	no	no	0	0	0
Pacific Quarry	4500844	0	0	0	0	0	$	0	0	no	no	0	0	0
Pederson Quarry	1302192	0	0	0	0	0	$	327	0	no	no	0	0	0
St Cloud Quarry	2100081	0	0	0	0	0	$	0	0	no	no	0	0	0
Yellow Medicine Quarry	2100033	0	0	0	0	0	$	0	0	no	no	0	0	0
Ames Mine	1300014	0	0	0	0	0	$	100	0	no	no	0	0	0
Cedar Rapids Quarry	1300122	0	0	0	0	0	$	127	0	no	no	0	0	0
Des Moines Portable	1300150	0	0	0	0	0	$	0	0	no	no	0	0	0
Des Moines Shop	1300932	0	0	0	0	0	$	100	0	no	no	0	0	0
Dubois Quarry	2501046	0	0	0	0	0	$	0	0	no	no	0	0	0
Durham Mine	1301225	0	0	0	0	0	$	200	0	no	no	0	0	0
Earlham Quarry	1302123	0	0	0	0	0	$	0	0	no	no	0	0	0
Environmental Crew (Plant 854)	1302126	0	0	0	0	0	$	0	0	no	no	0	0	0
Ferguson Quarry	1300124	0	0	0	0	0	$	0	0	no	no	0	0	0
Fort Calhoun	2500006	0	0	0	0	0	$	0	0	no	no	0	0	0
Iowa Grading	1302316	0	0	0	0	0	$	0	0	no	no	0	0	0
LeGrand Portable	1302317	0	0	0	0	0	$	0	0	no	no	0	0	0
Linn County Sand	1302208	0	0	0	0	0	$	0	0	no	no	0	0	0
Malcom Mine	1300112	2	0	0	0	0	$	1,095	0	no	no	0	0	0
Marshalltown Sand	1300718	0	0	0	0	0	$	0	0	no	no	0	0	0
New Harvey Sand	1301778	0	0	0	0	0	$	100	0	no	no	0	0	0
Raccoon River Sand	1302315	0	0	0	0	0	$	0	0	no	no	0	0	0
Reasoner Sand	1300814	1	0	0	0	0	$	150	0	no	no	0	0	0
Saylorville Sand	1302290	0	0	0	0	0	$	0	0	no	no	0	0	0
Springfield Quarry	2501103	0	0	0	0	0	$	0	0	no	no	0	0	0
Sully Mine	1300063	1	0	0	0	0	$	508	0	no	no	0	0	0
Weeping Water Mine	2500998	4	0	0	0	0	$	8,074	0	no	no	10	0	0
Northwest Division OH	A2354	0	0	0	0	0	$	0	0	no	no	0	0	0
Greenwood	2300141	0	0	0	0	0	$	0	0	no	no	0	0	1
Ottawa Quarry	1401590	0	0	0	0	0	$	0	0	no	no	1	1	0
Parkville Mine	2301883	1	0	0	0	0	$	646	0	no	no	3	0	0
Randolph Deep Mine	2302308	3	0	0	0	0	$	0	0	no	no	0	0	0
Stamper Mine	2302232	2	0	1	0	0	$	976	0	no	no	4	3	0
Sunflower	1401556	0	0	0	0	0	$	0	0	no	no	0	0	0
211 Quarry	4103829	0	0	0	0	0	$	0	0	no	no	2	0	0

Beckman Quarry	4101335	0	0	0	0	0	$	0	0	no	no	0	0	0
Bedrock Plant	4103283	0	0	0	0	0	$	481	0	no	no	0	0	0
Cobey	4104140	0	0	0	0	0	$	0	0	no	no	0	0	0
Helotes	4103137	0	0	0	0	0	$	0	0	no	no	0	0	0
Hondo	4104708	0	0	0	0	0	$	0	0	no	no	0	0	0
Hondo-1	4104090	0	0	0	0	0	$	100	0	no	no	0	0	0
New Braunfels Quarry	4104264	1	0	0	0	0	$	0	0	no	no	0	0	0
Poteet (Sand Plant)	4101342	0	0	0	0	0	$	0	0	no	no	0	0	0
Rio Medina	4103594	0	0	0	0	0	$	0	0	no	no	0	0	0
San Pedro Quarry	4101337	2	0	0	0	0	$	1,368	0	no	no	0	0	0
Garwood	4102886	0	0	0	0	0	$	0	0	no	no	0	0	0
Black Spur Quarry	4104159	0	0	0	0	0	$	0	0	no	no	1	1	0
Koontz McCombs Pit	4105048	1	0	0	0	0	$	1,942	0	no	no	0	0	0
Portable Crushing	4104204	0	0	0	0	0	$	0	0	no	no	0	0	0
S.T. Porter Pit	4102673	0	0	0	0	0	$	0	0	no	no	0	0	0
Chico	4103360	0	0	0	0	0	$	0	0	no	no	0	0	0
Davis	3401299	0	0	0	0	0	$	150	0	no	no	0	0	0
Mill Creek	3401285	0	0	0	0	0	$	162	0	no	no	0	0	0
Snyder	3401651	3	0	0	0	0	$	100	0	no	no	0	0	0
Augusta Quarry-KS	1400126	0	0	0	0	0	$	200	0	no	no	0	0	0
Black Rock Quarry	300011	0	0	0	0	0	$	0	0	no	no	0	0	0
Blake Quarry	1401584	0	0	0	0	0	$	0	0	no	no	0	0	0
Broken Bow SandG	3400460	0	0	0	0	0	$	0	0	no	no	0	0	0
Hatton Quarry	301614	0	0	0	0	0	$	200	0	no	no	0	0	0
Hugo	3400061	0	0	0	0	0	$	0	0	no	no	0	0	0
Idabel	3400507	0	0	0	0	0	$	0	0	no	no	0	0	0
Jones Mill Quarry	301586	0	0	0	0	0	$	0	0	no	no	0	0	0
Kansas Portable	1401659	0	0	0	0	0	$	0	0	no	no	0	0	0
North Marion Quarry	1401506	0	0	0	0	0	$	0	0	no	no	0	0	0
Sawyer	3401634	0	0	0	0	0	$	0	0	no	no	0	0	0
North Troy	3401905	1	0	0	0	0	$	224	0	no	no	1	1	0
North Troy Portable	3401949	0	0	0	0	0	$	0	0	no	no	0	0	0
Cottonwood Sand and Gravel	504418	0	0	0	0	0	$	0	0	no	no	0	0	0
Fountain Sand and Gravel	503821	0	0	0	0	0	$	100	0	no	no	0	0	0
Granite Canyon Quarry	4800018	0	0	0	0	0	$	0	0	no	no	0	0	0
Greeley 35th Sand and Gravel	504613	0	0	0	0	0	$	100	0	no	no	0	0	0
Guernsey	4800004	1	0	0	0	0	$	290	0	no	no	0	0	0
Gypsum Portable 4—11	504320	0	0	0	0	0	$	0	0	no	no	0	0	0
Mamm Creek Portable 15	504647	0	0	0	0	0	$	0	0	no	no	0	0	0
Milford	4202177	0	0	0	0	0	$	0	0	no	no	0	0	0
Mustang Quarry	2602484	0	0	0	0	0	$	0	0	no	no	0	0	0
Portable Crushing	503984	0	0	0	0	0	$	0	0	no	no	0	0	0
Portable Plant 10	503984	0	0	0	0	0	$	0	0	no	no	0	0	0
Portable Recycle 18	501057	0	0	0	0	0	$	0	0	no	no	0	0	0
Portable Recycle 2	504360	0	0	0	0	0	$	0	0	no	no	0	0	0
Portable Recycle 21	504520	0	0	0	0	0	$	0	0	no	no	0	0	0
Powers Portable	504531	0	0	0	0	0	$	0	0	no	no	0	0	0
Riverbend Sand and Gravel	504841	1	0	0	0	0	$	327	0	no	no	0	0	0
Sievers Portable 19—20	504531	0	0	0	0	0	$	0	0	no	no	0	0	0
Spanish Springs Co 2	2600803	1	0	0	0	0	$	0	0	no	no	0	0	0
Spec Agg Sand and Gravel	500860	0	0	0	0	0	$	0	0	no	no	0	0	0
Table Mountain Quarry	404847	0	0	0	0	0	$	0	0	no	no	0	0	0
Taft Sand and Gravel	504526	0	0	0	0	0	$	300	0	no	no	2	2	0
Taft Shop	504735	2	0	0	0	0	$	945	0	no	no	0	0	0
Greeley 35th Ready Mix	503215	2	0	0	0	0	$	352	0	no	no	0	0	0
Salisbury Shop	3101235	0	0	0	0	0	$	0	0	no	no	0	0	0
Woodville	3300156	0	0	0	0	0	$	0	0	no	no	0	0	0
Totals		40	0	1	0	0	$	32,583	0			43	11	8

* Of the 43 legal actions pending on June 30, 2014, 22 were contests of citations or orders referenced in Subpart B of CFR Part 2700, which includes contests of citations and orders issued under Section 104 of the Mine Act and contests of imminent danger orders under Section 107 of the Mine Act and 21 were contests of proposed penalties referenced in Subpart C of 29 CFR Part 2700, which are administrative proceedings before the Commission challenging a civil penalty that MSHA has proposed for the violation contained in a citation or order.

TXI Locations **
Crestmore	04-00010	0	0	0	0	0	$	343	0	no	no	0	0	0
Oro Grande	04-00011	0	0	0	0	0	$	0	0	no	no	0	0	0
Orlancha	04-04783	0	0	0	0	0	$	0	0	no	no	0	0	0
Woodworth II	16-01070	0	0	0	0	0	$	0	0	no	no	0	0	0
Jena	16-01298	0	0	0	0	0	$	0	0	no	no	0	0	0
Perryville	16-01417	0	0	0	0	0	$	0	0	no	no	0	0	0
Mill Creek	34-01859	2	0	0	0	0	$	0	0	no	no	0	0	0
Bridgeport	41-00007	0	0	0	0	0	$	308	0	no	no	0	0	0
Midlothian	41-00071	0	0	0	0	0	$	0	0	no	no	0	0	0
Garfield	41-03909	1	0	0	0	0	$	899	0	no	no	0	0	0
Hunter	41-02820	28	0	0	0	0	$	0	0	no	no	0	0	0
Tin Top	41-02852	1	0	0	0	0	$	0	0	no	no	0	0	0
Bells/Savoy	41-04019	2	0	0	0	0	$	1,640	0	no	no	0	0	0
Webberville	41-04363	0	0	0	0	0	$	0	0	no	no	0	0	0
Green	41-04363	0	0	0	0	0	$	0	0	no	no	0	0	0
Owen	41-03896	0	0	0	0	0	$	0	0	no	no	0	0	0
Exploration	C335	0	0	0	0	0	$	0	0	no	no	0	0	0
TXI Locations Totals		34	0	0	0	0	$	2,639	0			0	0	0

** Sites acquired by the Company effective July 1, 2014 as part of the business combination with Texas Industries, Inc. Represents citations, orders, violations, assessments, etc. with respect to the period of ownership by Texas Industries, Inc. from March 1, 2014 through June 30, 2014.

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Financial Instruments - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Maturities of cash equivalents, in months	Three
Long-term debt, carrying values	$ 1,084,801,000	$ 1,030,921,000	$ 1,093,319,000
Long-term debt, fair values	$ 1,168,302,000	$ 1,068,324,000	$ 1,141,592,000

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Net Sales By Product Line (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Combination, Separately Recognized Transactions
Net Sales	$ 601,937	$ 507,332	$ 981,615	$ 851,390
Gross profit (loss)	135,602	106,996	161,438	119,817
Aggregates
Business Combination, Separately Recognized Transactions
Net Sales	421,974	357,241	685,858	605,031
Gross profit (loss)	100,142	78,942	110,194	81,003
Asphalt
Business Combination, Separately Recognized Transactions
Net Sales	22,627	18,811	33,125	28,445
Gross profit (loss)	4,869	4,903	3,443	2,448
Ready Mixed Concrete
Business Combination, Separately Recognized Transactions
Net Sales	52,379	35,305	90,388	61,582
Gross profit (loss)	6,982	1,869	9,926	1,788
Road Paving
Business Combination, Separately Recognized Transactions
Net Sales	43,037	39,343	52,975	44,531
Gross profit (loss)	(249)	(284)	(4,231)	(4,571)
Total Aggregates Business
Business Combination, Separately Recognized Transactions
Net Sales	540,017	450,700	862,346	739,589
Gross profit (loss)	111,744	85,430	119,332	80,668
Specialty Products
Business Combination, Separately Recognized Transactions
Net Sales	61,920	56,632	119,269	111,801
Gross profit (loss)	23,394	21,284	42,149	40,866
Corporate
Business Combination, Separately Recognized Transactions
Gross profit (loss)	$ 464	$ 282	$ (43)	$ (1,717)

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Financial Data for Continuing Operations for Corporations Reportable Business Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Total revenues	$ 669,225	$ 561,326	$ 1,097,855	$ 945,234
Net Sales	601,937	507,332	981,615	851,390
Earnings (Loss) from operations, Total	96,241	69,635	80,344	46,314
Total Aggregates Business
Segment Reporting Information [Line Items]
Total revenues	602,505	499,982	968,821	823,660
Net Sales	540,017	450,700	862,346	739,589
Earnings (Loss) from operations, Total	86,854	58,936	71,058	28,460
Specialty Products
Segment Reporting Information [Line Items]
Total revenues	66,720	61,344	129,034	121,574
Net Sales	61,920	56,632	119,269	111,801
Earnings (Loss) from operations, Total	20,995	18,726	37,280	35,804
Mid-America Group
Segment Reporting Information [Line Items]
Total revenues	240,526	217,516	356,235	337,056
Net Sales	218,703	198,215	325,236	308,402
Earnings (Loss) from operations, Total	57,283	47,717	45,517	33,753
Southeast Group
Segment Reporting Information [Line Items]
Total revenues	75,168	60,442	134,988	116,184
Net Sales	70,725	55,261	126,106	106,584
Earnings (Loss) from operations, Total	(1,302)	(5,176)	(7,413)	(13,563)
West Group
Segment Reporting Information [Line Items]
Total revenues	286,811	222,024	477,598	370,420
Net Sales	250,589	197,224	411,004	324,603
Earnings (Loss) from operations, Total	30,873	16,395	32,954	8,270
Corporate
Segment Reporting Information [Line Items]
Earnings (Loss) from operations, Total	$ (11,608)	$ (8,027)	$ (27,994)	$ (17,950)

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Basic and Diluted Earnings Per Common Share (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Earnings Per Share, Basic and Diluted, by Common Class
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$ 59,577	$ 41,203	$ 37,974	$ 13,651
Less: Distributed and undistributed earnings attributable to unvested awards	246	197	154	182
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.	59,331	41,006	37,820	13,469
Basic and diluted net (loss) earnings available to common shareholders from discontinued operations	(56)	105	(70)	(183)
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$ 59,275	$ 41,111	$ 37,750	$ 13,286
Basic weighted-average common shares outstanding	46,395	46,129	46,355	46,079
Effect of dilutive employee and director awards	134	131	122	138
Diluted weighted-average common shares outstanding	46,529	46,260	46,477	46,217

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Business Segments (Tables)

6 Months Ended

Jun. 30, 2014

Financial Data for Continuing Operation For Corporation's Reportable Business Segments

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, business development expenses, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Total revenues:
Mid-America Group	$	240,526		$	217,516		$	356,235		$	337,056
Southeast Group		75,168			60,442			134,988			116,184
West Group		286,811			222,024			477,598			370,420
Total Aggregates Business		602,505			499,982			968,821			823,660
Specialty Products		66,720			61,344			129,034			121,574
Total	$	669,225		$	561,326		$	1,097,855		$	945,234
Net sales:
Mid-America Group	$	218,703		$	198,215		$	325,236		$	308,402
Southeast Group		70,725			55,261			126,106			106,584
West Group		250,589			197,224			411,004			324,603
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Earnings (Loss) from operations:
Mid-America Group	$	57,283		$	47,717		$	45,517		$	33,753
Southeast Group		(1,302	)		(5,176	)		(7,413	)		(13,563	)
West Group		30,873			16,395			32,954			8,270
Total Aggregates Business		86,854			58,936			71,058			28,460
Specialty Products		20,995			18,726			37,280			35,804
Corporate		(11,608	)		(8,027	)		(27,994	)		(17,950	)
Total	$	96,241		$	69,635		$	80,344		$	46,314

Asset Employed for Continuing Operations for Corporations Reportable Business Segments

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Assets employed:
Mid-America Group	$	1,311,860	$	1,242,394	$	1,185,684
Southeast Group		606,933		611,906		588,094
West Group		1,084,291		1,030,599		1,077,477
Total Aggregates Business		3,003,084		2,884,899		2,851,255
Specialty Products		151,129		154,024		153,542
Corporate		201,830		220,903		226,322
Total	$	3,356,043	$	3,259,826	$	3,231,119

Net Sales By Product Line

The following tables provide net sales and gross profit by product line for the Aggregates business, which are reconciled to consolidated amounts, as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Net sales:
Aggregates	$	421,974		$	357,241		$	685,858		$	605,031
Asphalt		22,627			18,811			33,125			28,445
Ready Mixed Concrete		52,379			35,305			90,388			61,582
Road Paving		43,037			39,343			52,975			44,531
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Gross profit (loss):
Aggregates	$	100,142		$	78,942		$	110,194		$	81,003
Asphalt		4,869			4,903			3,443			2,448
Ready Mixed Concrete		6,982			1,869			9,926			1,788
Road Paving		(249	)		(284	)		(4,231	)		(4,571	)
Total Aggregates Business		111,744			85,430			119,332			80,668
Specialty Products		23,394			21,284			42,149			40,866
Corporate		464			282			(43	)		(1,717	)
Total	$	135,602		$	106,996		$	161,438		$	119,817

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Noncash Investing and Financing Activities (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Schedule of Cash Flow, Supplemental
Acquisition of assets through capital lease	$ 6,333

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Unrecognized Tax Benefits Excluding Interest Correlative Effects and Indirect Benefits (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Reconciliation of Unrecognized Tax Benefits
Unrecognized tax benefits at beginning of period	$ 11,826
Gross increases - tax positions in prior years	1,898
Gross decreases - tax positions in prior years	(173)
Gross increases - tax positions in current year	961
Unrecognized tax benefits at end of period	$ 14,512

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Long Term Debt (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
6.6% Senior Notes, Due 2018
Debt Instrument
Maturity date	2018
Interest rate on notes	6.60%
7% Debentures, Due 2025
Debt Instrument
Maturity date	2025
Interest rate on notes	7.00%
6.25% Senior Notes, Due 2037
Debt Instrument
Maturity date	2037
Interest rate on notes	6.25%
Term Loan Facility, Due 2018
Debt Instrument
Maturity date	2018
Interest rate on term loan	1.65%	1.67%	2.20%
Trade Receivable Credit Facility
Debt Instrument
Credit Facility interest rate	0.75%	0.77%	0.79%
Revolving Facility
Debt Instrument
Credit Facility interest rate	1.40%		1.89%

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Asset Employed for Continuing Operations for Corporations Reportable Business Segments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	$ 3,356,043	$ 3,259,826	$ 3,231,119
Total Aggregates Business
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	3,003,084	2,884,899	2,851,255
Specialty Products
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	151,129	154,024	153,542
Mid-America Group
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	1,311,860	1,242,394	1,185,684
Southeast Group
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	606,933	611,906	588,094
West Group
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	1,084,291	1,030,599	1,077,477
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets employed, Total	$ 201,830	$ 220,903	$ 226,322

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Purchase of Noncontrolling Interest in Joint Venture

6 Months Ended

Jun. 30, 2014

Purchase of Noncontrolling Interest in Joint Venture

2. Purchase of Noncontrolling Interest in Joint Venture

On April 2, 2014, the Corporation paid $19,604,000 for the remaining 50% interest in a joint venture.

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Schedule of Components of Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service cost	$ 3,092	$ 4,060	$ 7,131	$ 8,060
Interest cost	5,624	5,799	12,971	11,512
Expected return on assets	(6,677)	(6,717)	(15,400)	(13,335)
Prior service cost (credit)	96	113	223	224
Actuarial loss (gain)	877	3,949	2,022	7,840
Net periodic benefit cost (credit)	3,012	7,204	6,947	14,301
Postretirement Benefit
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service cost	51	56	93	113
Interest cost	305	251	559	506
Expected return on assets	0	0	0	0
Prior service cost (credit)	(887)	(808)	(1,627)	(1,627)
Actuarial loss (gain)	(73)	6	(133)	12
Net periodic benefit cost (credit)	$ (604)	$ (495)	$ (1,108)	$ (996)

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Comprehensive Earnings (Loss) Attributable to Noncontrolling Interests (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Comprehensive Income (Loss)
Net earnings (loss) attributable to noncontrolling interests	$ 103	$ 259	$ (1,432)	$ (1,230)
Other comprehensive earnings, net of tax	1	3	2	5
Comprehensive earnings (loss) attributable to noncontrolling interests	$ 104	$ 262	$ (1,430)	$ (1,225)

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Comprehensive Earnings Attributable to Martin Marietta Materials Incorporated (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Comprehensive Income (Loss)
Net earnings attributable to Martin Marietta Materials, Inc.	$ 59,521	$ 41,308	$ 37,904	$ 13,468
Other comprehensive earnings (loss), net of tax	603	(1,309)	1,973	(88)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	$ 60,124	$ 39,999	$ 39,877	$ 13,380

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Commitments and Contingencies - Additional Information (Detail) (USD $)				1 Months Ended	6 Months Ended	9 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Aug. 31, 2013 Revolving Line Of Credit Expires In July 2013	Aug. 31, 2013 Revolving Line Of Credit Expires In August 2015	Jun. 30, 2014 Loan Due May 2016	Sep. 30, 2013 Loan Due May 2016	Dec. 31, 2013 Loan Due May 2016
Commitments and Contingencies [Line Items]
Guarantee of affiliate's obligations			$ 24,000,000
Line of credit maturity period				2014-08
Loan to affiliate						3,402,000
Loan to affiliate, due date					2016-05
Due from affiliate	$ 6,000,000	$ 6,000,000			$ 2,455,000		$ 2,984,000

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Changes in Accumulated Other Comprehensive Earnings, Net of Tax (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ (42,744)	$ (104,948)	$ (44,114)	$ (106,169)
Other comprehensive (loss) earnings before reclassifications, net of tax	416	(3,447)	1,326	(4,315)
Amounts reclassified from accumulated other comprehensive loss, net of tax	187	2,138	647	4,227
Other comprehensive earnings, net of tax	603	(1,309)	1,973	(88)
Balance at end of period	(42,141)	(106,257)	(42,141)	(106,257)
Pension and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(44,267)	(106,296)	(44,549)	(108,189)
Other comprehensive (loss) earnings before reclassifications, net of tax	(426)	(2,278)	(430)	(2,312)
Amounts reclassified from accumulated other comprehensive loss, net of tax	8	1,971	294	3,898
Other comprehensive earnings, net of tax	(418)	(307)	(136)	1,586
Balance at end of period	(44,685)	(106,603)	(44,685)	(106,603)
Foreign Currency
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	4,816	5,323	3,902	6,157
Other comprehensive (loss) earnings before reclassifications, net of tax	842	(1,169)	1,756	(2,003)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0	0	0
Other comprehensive earnings, net of tax	842	(1,169)	1,756	(2,003)
Balance at end of period	5,658	4,154	5,658	4,154
Unamortized Value of Terminated Forward Starting Interest Rate Swap
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(3,293)	(3,975)	(3,467)	(4,137)
Other comprehensive (loss) earnings before reclassifications, net of tax	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss, net of tax	179	167	353	329
Other comprehensive earnings, net of tax	179	167	353	329
Balance at end of period	$ (3,114)	$ (3,808)	$ (3,114)	$ (3,808)

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Noncurrent Deferred Tax Assets Recorded in Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period, Pension and Postretirement Benefit Plans	$ 29,016	$ 69,641	$ 29,198	$ 70,881
Other comprehensive earnings, tax effect, Pension and Postretirement Benefit Plans	271	201	89	(1,039)
Balance at end of period, Pension and Postretirement Benefit Plans	29,287	69,842	29,287	69,842
Balance at beginning of period, Unamortized Value of Terminated Forward Starting Interest Rate Swap	2,155	2,600	2,269	2,707
Other comprehensive earnings, tax effect, Unamortized Value of Terminated Forward Starting Interest Rate Swap	(116)	(108)	(230)	(215)
Balance at end of period, Unamortized Value of Terminated Forward Starting Interest Rate Swap	2,039	2,492	2,039	2,492
Balance at beginning of period, Net Non current Deferred Tax Assets	31,171	72,241	31,467	73,588
Other comprehensive earnings, tax effect, Net Non current Deferred Tax Assets	155	93	(141)	(1,254)
Balance at end of period, Net Non current Deferred Tax Assets	$ 31,326	$ 72,334	$ 31,326	$ 72,334

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2014

Significant Accounting Policies

1. Significant Accounting Policies

Organization

Martin Marietta Materials, Inc., (the “Corporation”) is engaged principally in the construction aggregates business. The Corporation’s aggregates product line accounted for 69% of consolidated 2013 net sales and includes crushed stone, sand and gravel, and is used for construction of highways and other infrastructure projects, and in the nonresidential and residential construction industries. Aggregates products are also used in the railroad, agricultural, utility and environmental industries. These aggregates products, along with the Corporation’s vertically-integrated operations, which include asphalt products, ready mixed concrete and road paving construction services (and which accounted for 19% of consolidated 2013 net sales), are sold and shipped from a network of nearly 300 quarries, distribution facilities and plants to customers in 30 states, Canada, the Bahamas and the Caribbean Islands. The aggregates and vertically-integrated operations are reported collectively as the Corporation’s “Aggregates business”.

Effective January 1, 2014, the Corporation made minor changes to the operations and management reporting structure of its Aggregates business, resulting in an immaterial change to its reportable segments. The Corporation currently conducts its Aggregates business through three reportable segments as follows:

AGGREGATES BUSINESS

Reportable Segments	Mid-America Group	Southeast Group	West Group
Operating Locations	Indiana, Iowa, northern Kansas, Kentucky, Maryland, Minnesota, eastern Nebraska, North Carolina, Ohio, South Carolina, Virginia, Washington and West Virginia	Alabama, Florida, Georgia, Mississippi, Tennessee, Nova Scotia and the Bahamas	Arkansas, Colorado, southern Kansas, Louisiana, Missouri, western Nebraska, Nevada, Oklahoma, Texas, Utah and Wyoming

In addition to the Aggregates business, the Corporation has a Specialty Products segment, which accounted for 12% of consolidated 2013 net sales, that produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

Basis of Presentation

The accompanying unaudited consolidated financial statements of 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 in 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, 2013. In the opinion of management, the interim consolidated 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 consolidated results of operations for the three and six months ended June 30, 2014 are not indicative of the results expected for other interim periods or the full year. The consolidated balance sheet at December 31, 2013 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These consolidated 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, 2013. These consolidated financial statements do not reflect the Corporation’s acquisition of Texas Industries, Inc. (“TXI”) on July 1, 2014, which is discussed further in Note 11.

Early Adoption of New Accounting Standard

Effective January 1, 2014, the Corporation early adopted the Financial Accounting Standard Board’s (the “FASB”) final guidance on reporting discontinued operations. The guidance is to be applied prospectively and redefines discontinued operations to be either 1) a component of an entity or group of components that has been disposed of or is classified as held for sale that represents a strategic shift that has or will have a major effect on an entity’s operations and financial results or 2) a business that, upon acquisition, meets the criteria to be classified as held for sale. The adoption of the accounting standard did not have any effect on the Corporation’s financial position or results of operations.

Revenue Recognition Standard

The FASB issued an accounting standard update that amends the accounting guidance on revenue recognition. The amendments in this accounting standard update are intended to provide a more robust framework for addressing revenue issues, improve comparability of revenue recognition practices and improve disclosure requirements. The amendments are to be applied on a full retrospective or modified retrospective approach. The amendments in this accounting standard update are effective for interim and annual reporting periods beginning after December 15, 2016. The Corporation is currently evaluating the impact of the provisions of the accounting standard update, and at this time does not expect the impact to be material to its results of operations.

Reclassifications

Prior-year segment information for the Aggregates business presented in Note 9 has been reclassified to conform to the presentation of the Corporation’s current reportable segments.

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss

Consolidated comprehensive earnings/loss for the Corporation consist of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense, and are presented in the Corporation’s consolidated statements of earnings and comprehensive earnings.

Comprehensive earnings attributable to Martin Marietta Materials, Inc. is as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2014		2013			2014		2013
	(Dollars in Thousands)
Net earnings attributable to Martin Marietta Materials, Inc.	$	59,521	$	41,308		$	37,904	$	13,468
Other comprehensive earnings (loss), net of tax		603		(1,309	)		1,973		(88	)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	$	60,124	$	39,999		$	39,877	$	13,380

Comprehensive earnings (loss) attributable to noncontrolling interests, consisting of net earnings or loss and adjustments for the funded status of pension and postretirement benefit plans, is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014			2013
	(Dollars in Thousands)
Net earnings (loss) attributable to noncontrolling interests	$	103	$	259	$	(1,432	)	$	(1,230	)
Other comprehensive earnings, net of tax		1		3		2			5
Comprehensive earnings (loss) attributable to noncontrolling interests	$	104	$	262	$	(1,430	)	$	(1,225	)

Accumulated other comprehensive loss consists of unrealized gains and losses related to the funded status of pension and postretirement benefit plans; foreign currency translation; and the unamortized value of terminated forward starting interest rate swap agreements, and is presented on the Corporation’s consolidated balance sheets. Changes in accumulated other comprehensive loss, net of tax, are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Three Months Ended June 30, 2014
Balance at beginning of period	$	(44,267	)	$	4,816		$	(3,293	)	$	(42,744	)
Other comprehensive earnings before reclassifications, net of tax		(426	)		842			—			416
Amounts reclassified from accumulated other comprehensive loss, net of tax		8			—			179			187
Other comprehensive earnings, net of tax		(418	)		842			179			603
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Three Months Ended June 30, 2013
Balance at beginning of period	$	(106,296	)	$	5,323		$	(3,975	)	$	(104,948	)
Other comprehensive loss before reclassifications, net of tax		(2,278	)		(1,169	)		—			(3,447	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,971			—			167			2,138
Other comprehensive earnings, net of tax		(307	)		(1,169	)		167			(1,309	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $276,000 and $1,490,000 for the three months ended June 30, 2014 and 2013, respectively.

	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Six Months Ended June 30, 2014
Balance at beginning of period	$	(44,549	)	$	3,902		$	(3,467	)	$	(44,114	)
Other comprehensive (loss ) earnings before reclassifications, net of tax		(430	)		1,756			—			1,326
Amounts reclassified from accumulated other comprehensive loss, net of tax		294			—			353			647
Other comprehensive earnings, net of tax		(136	)		1,756			353			1,973
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Six Months Ended June 30, 2013
Balance at beginning of period	$	(108,189	)	$	6,157		$	(4,137	)	$	(106,169	)
Other comprehensive loss earnings before reclassifications, net of tax		(2,312	)		(2,003	)		—			(4,315	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		3,898			—			329			4,227
Other comprehensive earnings, net of tax		1,586			(2,003	)		329			(88	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $280,000 and $1,512,000 for the six months ended June 30, 2014 and 2013, respectively.

Changes in net noncurrent deferred tax assets recorded in accumulated other comprehensive loss are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Net Noncurrent Deferred Tax Assets
	Three Months Ended June 30, 2014
Balance at beginning of period	$	29,016		$	2,155		$	31,171
Tax effect of other comprehensive earnings		271			(116	)		155
Balance at end of period	$	29,287		$	2,039		$	31,326
	Three Months Ended June 30, 2013
Balance at beginning of period	$	69,641		$	2,600		$	72,241
Tax effect of other comprehensive earnings		201			(108	)		93
Balance at end of period	$	69,842		$	2,492		$	72,334
	Six Months Ended June 30, 2014
Balance at beginning of period	$	29,198		$	2,269		$	31,467
Tax effect of other comprehensive earnings		89			(230	)		(141	)
Balance at end of period	$	29,287		$	2,039		$	31,326
	Six Months Ended June 30, 2013
Balance at beginning of period	$	70,881		$	2,707		$	73,588
Tax effect of other comprehensive earnings		(1,039	)		(215	)		(1,254	)
Balance at end of period	$	69,842		$	2,492		$	72,334

Reclassifications out of accumulated other comprehensive loss are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,						Affected line items in
	2014			2013			2014			2013			the consolidated financial statements
	(Dollars in Thousands)
Pension and postretirement benefit plans
Amortization of:
Prior service credit	$	(791	)	$	(695	)	$	(1,404	)	$	(1,403	)
Actuarial loss		804			3,955			1,889			7,852
		13			3,260			485			6,449		Cost of sales; Selling, general & administrative expenses
Tax effect		(5	)		(1,289	)		(191	)		(2,551	)	Deferred income taxes
	$	8		$	1,971		$	294		$	3,898
Unamortized value of terminated forward starting interest rate swap
Additional interest expense	$	295		$	275		$	583		$	544		Interest expense
Tax effect		(116	)		(108	)		(230	)		(215	)	Deferred income taxes
	$	179		$	167		$	353		$	329

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings/loss 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. If there is a net loss, no amount of the undistributed loss is attributed to unvested participating securities. 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. For the three and six months ended June 30, 2014 and 2013, the diluted per-share computations reflect a change in the number of common shares outstanding 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 June 30,					Six Months Ended June 30,
	2014			2013		2014			2013
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	59,577		$	41,203	$	37,974		$	13,651
Less: Distributed and undistributed earnings attributable to unvested awards		246			197		154			182
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		59,331			41,006		37,820			13,469
Basic and diluted net (loss) earnings available to common shareholders from discontinued operations		(56	)		105		(70	)		(183	)
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	59,275		$	41,111	$	37,750		$	13,286
Basic weighted-average common shares outstanding		46,395			46,129		46,355			46,079
Effect of dilutive employee and director awards		134			131		122			138
Diluted weighted-average common shares outstanding		46,529			46,260		46,477			46,217

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Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax effect	$ (271)	$ (201)	$ (89)	$ 1,039
Loss from Continuing Operations	59,680	41,462	36,542	12,421
Additional interest expense	(12,947)	(13,619)	(25,149)	(27,115)
Tax effect	116	108	230	215
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service credit	(791)	(695)	(1,404)	(1,403)
Actuarial loss	804	3,955	1,889	7,852
Loss from Continuing Operations	8	1,971	294	3,898
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans | Deferred Income Taxes
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax effect	(5)	(1,289)	(191)	(2,551)
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans | Cost of sale; Selling, General & Administrative Expenses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications out of accumulated other comprehensive loss before taxes	13	3,260	485	6,449
Reclassification out of Accumulated Other Comprehensive Income | Unamortized Value of Terminated Forward Starting Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from Continuing Operations	179	167	353	329
Additional interest expense	295	275	583	544
Reclassification out of Accumulated Other Comprehensive Income | Unamortized Value of Terminated Forward Starting Interest Rate Swap | Deferred Income Taxes
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax effect	$ (116)	$ (108)	$ (230)	$ (215)

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Schedule of Estimated Effective Income Tax Rate (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Income Taxes
Continuing operations	29.80%	35.00%
Discontinued operations	26.40%	26.20%
Consolidated overall	29.80%	35.20%

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Current Assets:
Cash and cash equivalents	$ 34,329	$ 42,437	$ 43,712
Accounts receivable, net	343,784	245,421	287,521
Inventories, net	348,168	347,307	348,873
Current deferred income tax benefits	72,413	74,821	79,104
Other current assets	78,007	45,380	47,275
Total Current Assets	876,701	755,366	806,485
Property, plant and equipment	3,970,472	3,976,884	3,843,806
Allowances for depreciation, depletion and amortization	(2,195,098)	(2,177,643)	(2,126,420)
Net property, plant and equipment	1,775,374	1,799,241	1,717,386
Goodwill	616,621	616,621	616,303
Other intangibles, net	46,896	48,591	48,668
Other noncurrent assets	40,451	40,007	42,277
Total Assets	3,356,043	3,259,826	3,231,119
Current Liabilities:
Bank overdraft		2,556
Accounts payable	139,442	103,600	99,960
Accrued salaries, benefits and payroll taxes	17,393	18,114	16,259
Pension and postretirement benefits	2,356	2,026	4,616
Accrued insurance and other taxes	33,014	29,103	30,679
Current maturities of long-term debt and short-term facilities	12,404	12,403	6,169
Accrued interest	7,386	7,349	7,709
Other current liabilities	32,730	35,398	27,141
Total Current Liabilities	244,725	210,549	192,533
Long-term debt	1,072,397	1,018,518	1,087,150
Pension, postretirement and postemployment benefits	82,662	78,489	184,849
Noncurrent deferred income taxes	275,279	279,999	235,505
Other noncurrent liabilities	113,981	97,352	90,415
Total Liabilities	1,789,044	1,684,907	1,790,452
Equity:
Common stock, par value $0.01 per share	463	461	461
Preferred stock, par value $0.01 per share	0	0	0
Additional paid-in capital	456,989	432,792	429,936
Accumulated other comprehensive loss	(42,141)	(44,114)	(106,257)
Retained earnings	1,149,388	1,148,738	1,077,998
Total Shareholders' Equity	1,564,699	1,537,877	1,402,138
Noncontrolling interests	2,300	37,042	38,529
Total Equity	1,566,999	1,574,919	1,440,667
Total Liabilities and Equity	$ 3,356,043	$ 3,259,826	$ 3,231,119

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Business Segments - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014 Segment
Segment Reporting Information [Line Items]
Reportable business segments	3

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:
Consolidated net earnings	$ 36,472	$ 12,238
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization	86,147	85,992
Stock-based compensation expense	4,370	3,981
Gains on divestitures and sales of assets	(1,747)	(422)
Deferred income taxes	(6,433)	9,282
Excess tax benefits from stock-based compensation transactions	(1,922)	(2,253)
Other items, net	3,227	(530)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net	(98,911)	(65,165)
Inventories, net	(4,269)	(15,838)
Accounts payable	35,842	16,423
Other assets and liabilities, net	17,587	4,764
Net Cash Provided by Operating Activities	70,363	48,472
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(84,737)	(50,002)
Acquisitions, net	(117)	(3,246)
Proceeds from divestitures and sales of assets	2,154	1,874
Repayments from affiliate	529
Payment of railcar construction advances	(14,513)
Reimbursement of railcar construction advances	14,513
Net Cash Used for Investing Activities	(82,171)	(51,374)
Cash Flows from Financing Activities:
Borrowings of long-term debt	100,000	295,500
Repayments of long-term debt	(46,417)	(250,167)
Payments on capital lease obligations	(1,052)
Debt issuance costs	(881)	(510)
Change in bank overdraft	(2,556)
Dividends paid	(37,254)	(37,068)
Purchase of remaining interest in existing subsidiaries	(19,604)
Issuances of common stock	9,542	11,212
Excess tax benefits from stock-based compensation transactions	1,922	2,253
Net Cash Provided by Financing Activities	3,700	21,220
Net (Decrease) Increase in Cash and Cash Equivalents	(8,108)	18,318
Cash and Cash Equivalents, beginning of period	42,437	25,394
Cash and Cash Equivalents, end of period	34,329	43,712
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	25,173	25,868
Cash paid (received) for income taxes	$ 3,511	$ (6,103)

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Inventories Net (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Inventory Disclosure
Finished products	$ 358,759	$ 368,334	$ 366,320
Products in process and raw materials	20,732	16,077	18,701
Supplies and expendable parts	65,287	61,922	59,437
Inventories, Gross	444,778	446,333	444,458
Less: Allowances	96,610	99,026	95,585
Total	$ 348,168	$ 347,307	$ 348,873

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Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2014

Long-Term Debt

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	299,006	$	298,893	$	298,783
7% Debentures, due 2025		124,485		124,471		124,457
6.25% Senior Notes, due 2037		228,165		228,148		228,130
Term Loan Facility, due 2018, interest rate of 1.65% at June 30, 2014; 1.67% at December 31, 2013; and 2.20% at June 30, 2013		242,350		248,441		240,000
Revolving Facility, interest rate of 1.40% at June 30, 2014 and 1.89% at June 30, 2013		40,000		—		50,000
Trade Receivable Facility, interest rate of 0.75% at June 30, 2014; 0.77% at December 31, 2013; and 0.79% at June 30, 2013		150,000		130,000		150,000
Other notes		795		968		1,949
Total debt		1,084,801		1,030,921		1,093,319
Less: Current maturities		12,404		12,403		6,169
Long-term debt	$	1,072,397	$	1,018,518	$	1,087,150

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Long Term Debt (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Debt Instrument
Total debt	$ 1,084,801,000	$ 1,030,921,000	$ 1,093,319,000
Less: Current maturities	12,404,000	12,403,000	6,169,000
Long-term debt	1,072,397,000	1,018,518,000	1,087,150,000
6.6% Senior Notes, Due 2018
Debt Instrument
Total debt	299,006,000	298,893,000	298,783,000
7% Debentures, Due 2025
Debt Instrument
Total debt	124,485,000	124,471,000	124,457,000
6.25% Senior Notes, Due 2037
Debt Instrument
Total debt	228,165,000	228,148,000	228,130,000
Term Loan Facility, Due 2018
Debt Instrument
Total debt	242,350,000	248,441,000	240,000,000
Trade Receivable Credit Facility
Debt Instrument
Credit Facility	150,000,000	130,000,000	150,000,000
Other notes
Debt Instrument
Other notes	795,000	968,000	1,949,000
Revolving Facility
Debt Instrument
Credit Facility	$ 40,000,000		$ 50,000,000

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Pension and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Components of Net Periodic Benefit Cost

The estimated components of the recorded net periodic benefit cost (credit) for pension and postretirement benefits are as follows:

	Three Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	3,092		$	4,060		$	51		$	56
Interest cost		5,624			5,799			305			251
Expected return on assets		(6,677	)		(6,717	)		—			—
Amortization of:
Prior service cost (credit)		96			113			(887	)		(808	)
Actuarial loss (gain)		877			3,949			(73	)		6
Net periodic benefit cost (credit)	$	3,012		$	7,204		$	(604	)	$	(495	)
	Six Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	7,131		$	8,060		$	93		$	113
Interest cost		12,971			11,512			559			506
Expected return on assets		(15,400	)		(13,335	)		—			—
Amortization of:
Prior service cost (credit)		223			224			(1,627	)		(1,627	)
Actuarial loss (gain)		2,022			7,840			(133	)		12
Net periodic benefit cost (credit)	$	6,947		$	14,301		$	(1,108	)	$	(996	)

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Consolidated Statement of Total Equity (USD $) In Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Shareholders' Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2013	$ 1,574,919	$ 461	$ 432,792	$ (44,114)	$ 1,148,738	$ 1,537,877	$ 37,042
Beginning Balance (in shares) at Dec. 31, 2013		46,261
Consolidated net earnings	36,472				37,904	37,904	(1,432)
Other comprehensive earnings	1,975			1,973		1,973	2
Dividends declared	(37,254)				(37,254)	(37,254)
Issuances of common stock for stock award plans (in shares)		134
Issuances of common stock for stock award plans	11,430	2	11,428			11,430
Stock-based compensation expense	4,370		4,370			4,370
Purchase of subsidiary shares from noncontrolling interest	(24,913)		8,399			8,399	(33,312)
Ending Balance at Jun. 30, 2014	$ 1,566,999	$ 463	$ 456,989	$ (42,141)	$ 1,149,388	$ 1,564,699	$ 2,300
Ending Balance (in shares) at Jun. 30, 2014		46,395

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Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01

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Supplemental Cash Flow Information

6 Months Ended

Jun. 30, 2014

Supplemental Cash Flow Information

10. Supplemental Cash Flow Information

The components of the change in other assets and liabilities, net, are as follows:

	Six Months Ended
	June 30,
	2014			2013
	(Dollars in Thousands)
Other current and noncurrent assets	$	(6,139	)	$	(3,729	)
Accrued salaries, benefits and payroll taxes		(755	)		(5,366	)
Accrued insurance and other taxes		3,911			1,996
Accrued income taxes		16,678			(430	)
Accrued pension, postretirement and postemployment benefits		4,281			2,122
Other current and noncurrent liabilities		(389	)		10,171
	$	17,587		$	4,764

The change in accrued income taxes is primarily driven by an increase in the estimated tax provision for 2014. The change in other current and noncurrent liabilities is primarily attributable to estimated settlements with taxing authorities recorded in 2013.

Noncash investing and financing activities are as follows:

	Six Months Ended
	June 30,
	2014		2013
	(Dollars in Thousands)
Noncash investing and financing activities:
Acquisition of assets through capital lease	$	6,333	$	—

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Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 25, 2014
Document Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Trading Symbol	MLM
Entity Registrant Name	MARTIN MARIETTA MATERIALS INC
Entity Central Index Key	0000916076
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		66,918,724

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Business Developments

6 Months Ended

Jun. 30, 2014

Business Developments

11. Business Developments

TXI Business Combination

On July 1, 2014, subsequent to the end of the Corporation’s second quarter and pursuant to the merger agreement (the “Merger Agreement”) dated as of January 27, 2014 by and among the Corporation, Project Holdings, Inc., a wholly-owned subsidiary of the Corporation (“Merger Sub”), and TXI, Merger Sub merged with and into TXI, with TXI surviving as a wholly-owned subsidiary of the Corporation (the “Merger”). As a result of the Merger, each outstanding share of TXI common stock (other than shares owned by TXI, the Corporation or Merger Sub, which were cancelled) was converted into the right to receive 0.70 shares of the Corporation’s common stock, with cash paid in lieu of fractional shares. The Corporation issued approximately 20,300,000 shares of its common stock to former TXI stockholders in connection with the Merger. Based on the Corporation’s closing stock price on July 1, 2014 of $132.00, the aggregate value of the Corporation’s common stock delivered to former TXI stockholders was approximately $2,680,000,000. Additionally, the fair value of outstanding TXI stock options and stock appreciation rights that were converted to the Corporation’s stock awards at the acquisition date will be a component of the total purchase price.

TXI is the largest producer of cement in Texas and a major cement producer in California. TXI is also a major supplier of construction aggregate, ready mixed concrete and concrete products. The combination expands the Corporation’s geographic footprint and positions the Corporation to benefit from the strength of the combined aggregates platform.

The Corporation is in the process of fair valuing assets acquired and liabilities assumed, and as of August 4, 2014, the initial accounting for the business combination has not been completed pending the determination of these values. However, the assets included are cash and cash equivalents; trade receivables; inventories (including finished goods, parts and supplies); deferred income tax assets and liabilities; real property; investments; property, plant and equipment; and intangibles. Liabilities to be assumed are accounts payable; workers’ compensation and property liability accruals; notes payables; defined benefit plans; and litigation accruals.

For the six months ended June 30, 2014, the Corporation incurred $12,781,000 of business development expenses and $2,210,000 of acquisition integration expenses related to this business combination.

Assets Held for Sale

On June 27, 2014, the Corporation announced that the U.S. Department of Justice (“DOJ”) completed its review of the Corporation’s business transaction with TXI and the Corporation reached an agreement with the DOJ. Under the terms of the agreement, the Corporation will divest an aggregates quarry in Oklahoma and two rail yards in Texas. Assets held for sale are inventory and property, plant and equipment. Liabilities to be transferred with the sale are asset retirement obligations. At June 30, 2014, these assets and liabilities are included with other current assets and other current liabilities, respectively, on the consolidated balance sheet.

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Consolidated Statements of Earnings and Comprehensive Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Sales	$ 601,937	$ 507,332	$ 981,615	$ 851,390
Freight and delivery revenues	67,288	53,994	116,240	93,844
Total revenues	669,225	561,326	1,097,855	945,234
Cost of sales	466,335	400,336	820,177	731,573
Freight and delivery costs	67,288	53,994	116,240	93,844
Total cost of revenues	533,623	454,330	936,417	825,417
Gross Profit	135,602	106,996	161,438	119,817
Selling, general & administrative expenses	36,566	37,843	70,813	75,492
Business development expenses	3,338	275	12,850	582
Acquisition integration expenses	1,942		2,210
Other operating income, net	(2,485)	(757)	(4,779)	(2,571)
Earnings from Operations	96,241	69,635	80,344	46,314
Interest expense	12,947	13,619	25,149	27,115
Other nonoperating (income) and expenses, net	(292)	(544)	3,171	78
Earnings from continuing operations before taxes on income	83,586	56,560	52,024	19,121
Income tax expense	23,906	15,098	15,482	6,700
Earnings from Continuing Operations	59,680	41,462	36,542	12,421
(Loss) Gain on discontinued operations, net of related tax (benefit) expense of ($24), $11, ($25) and ($65), respectively	(56)	105	(70)	(183)
Consolidated net earnings	59,624	41,567	36,472	12,238
Less: Net earnings (loss) attributable to noncontrolling interests	103	259	(1,432)	(1,230)
Net Earnings Attributable to Martin Marietta Materials, Inc.	59,521	41,308	37,904	13,468
Net Earnings Attributable to Martin Marietta Materials, Inc.:
Earnings from continuing operations	59,577	41,203	37,974	13,651
(Loss) Earnings from discontinued operations	(56)	105	(70)	(183)
Net Earnings Attributable to Martin Marietta Materials, Inc.	59,521	41,308	37,904	13,468
Consolidated Comprehensive Earnings: (See Note 1)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	60,124	39,999	39,877	13,380
Earnings (Loss) attributable to noncontrolling interests	104	262	(1,430)	(1,225)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 60,228	$ 40,261	$ 38,447	$ 12,155
Net Earnings Attributable to Martin Marietta Materials, Inc. Per Common Share:
Basic from continuing operations attributable to common shareholders	$ 1.28	$ 0.89	$ 0.81	$ 0.29
Discontinued operations attributable to common shareholders
Earnings Per Share, Basic, Total	$ 1.28	$ 0.89	$ 0.81	$ 0.29
Diluted from continuing operations attributable to common shareholders	$ 1.27	$ 0.89	$ 0.81	$ 0.29
Discontinued operations attributable to common shareholders
Earnings Per Share, Diluted, Total	$ 1.27	$ 0.89	$ 0.81	$ 0.29
Weighted-Average Common Shares Outstanding:
Basic	46,395	46,129	46,355	46,079
Diluted	46,529	46,260	46,477	46,217
Cash Dividends Per Common Share	$ 0.40	$ 0.40	$ 0.80	$ 0.80

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Financial Instruments

6 Months Ended

Jun. 30, 2014

Financial Instruments

5. Financial Instruments

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

Temporary cash investments are placed primarily in money market funds, money market demand deposit accounts and Eurodollar time deposits with the following financial institutions: Branch Banking and Trust Company, Comerica Bank, Fifth Third Bank, JPMorgan Chase Bank, N.A., Regions Bank 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, Colorado, Iowa and Georgia). The estimated fair values of customer receivables approximate their carrying amounts due to the short-term nature of the receivables.

Notes receivable are primarily promissory notes with customers and are not publicly traded. Management estimates that the fair value of notes receivable approximates the carrying amount.

The bank overdraft represents amounts to be funded to financial institutions for checks that have cleared the bank. The estimated fair value of the bank overdraft approximates its carrying value.

Accounts payable represent amounts owed to suppliers and vendors. The estimated fair value of accounts payable approximates its carrying amounts due to the short-term nature of the payables.

The carrying values and fair values of the Corporation’s long-term debt were $1,084,801,000 and $1,168,302,000, respectively, at June 30, 2014; $1,030,921,000 and $1,068,324,000, respectively, at December 31, 2013; and $1,093,319,000 and $1,141,592,000, respectively, at June 30, 2013. The estimated fair value of the Corporation’s publicly-registered long-term notes was estimated based on Level 1 of the fair value hierarchy using quoted market prices. The estimated fair value of other borrowings, which primarily represents variable-rate debt, approximates its carrying amount as the interest rates reset periodically.

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Long-Term Debt

6 Months Ended

Jun. 30, 2014

Long-Term Debt

4. Long-Term Debt

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	299,006	$	298,893	$	298,783
7% Debentures, due 2025		124,485		124,471		124,457
6.25% Senior Notes, due 2037		228,165		228,148		228,130
Term Loan Facility, due 2018, interest rate of 1.65% at June 30, 2014; 1.67% at December 31, 2013; and 2.20% at June 30, 2013		242,350		248,441		240,000
Revolving Facility, interest rate of 1.40% at June 30, 2014 and 1.89% at June 30, 2013		40,000		—		50,000
Trade Receivable Facility, interest rate of 0.75% at June 30, 2014; 0.77% at December 31, 2013; and 0.79% at June 30, 2013		150,000		130,000		150,000
Other notes		795		968		1,949
Total debt		1,084,801		1,030,921		1,093,319
Less: Current maturities		12,404		12,403		6,169
Long-term debt	$	1,072,397	$	1,018,518	$	1,087,150

On June 23, 2014, the Corporation priced its offering of $300,000,000 aggregate principal amount of its Floating Rate Senior Notes due 2017 (the “Floating Rate Notes”) and $400,000,000 of its 4.25% Senior Notes due 2024 (the “4.25% Senior Notes” and together with the Floating Rate Notes, the “Notes”). The bond transaction closed and settlement occurred on July 2, 2014. The proceeds from the offering were used to redeem $650,000,000 of 9.25% notes due in 2020 assumed with TXI plus a make-whole premium and accrued interest. In connection with the issuance of the Notes, the Corporation entered into an indenture, dated as of July 2, 2014, between the Corporation and Regions Bank, as trustee, and a Registration Rights Agreement, dated as of July 2, 2014, with respect to the Notes, among the Corporation, Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC, as representatives of the several initial purchasers named in Schedule I to the purchase agreement entered into on June 23, 2014 with respect to the Notes. The Floating Rate Senior Notes bear interest at a rate equal to the three-month LIBOR plus 1.10% and may not be redeemed prior to maturity. The 4.25% Senior Notes may be redeemed in whole or in part prior to their maturity at a make-whole redemption price.

The Corporation, through a wholly-owned special purpose subsidiary, has a trade receivable securitization facility with SunTrust Bank and certain other lenders that may become a party to the facility from time to time (the “Trade Receivable Facility”). The Trade Receivable Facility is backed by eligible, as defined, trade receivables of $311,792,000, $213,386,000 and $253,020,000 at June 30, 2014, December 31, 2013 and June 30, 2013, respectively, which are originated by the Corporation and then sold to the wholly-owned special purpose subsidiary by the Corporation. The Corporation continues to be responsible for the servicing and administration of the receivables purchased by the wholly-owned special purpose subsidiary. At June 30, 2014, December 31, 2013 and June 30, 2013, outstanding borrowings under the Trade Receivable Facility were classified as long-term on the consolidated balance sheet as the Corporation has the intent and ability to refinance amounts outstanding using other long-term credit facilities. The Trade Receivable Facility contains a cross-default provision to the Corporation’s other debt agreements. On April 18, 2014, the Corporation extended the maturity of the Trade Receivable Facility to September 30, 2014. On July 1, 2014, the Trade Receivable Facility was amended to increase the borrowing capacity from $150,000,000 to $250,000,000.

The Corporation’s Credit Agreement, which provides a $250,000,000 senior unsecured term loan (the “Term Loan Facility”) and a $350,000,000 five-year senior unsecured revolving facility (the “Revolving Facility”), 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 3.50x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation, as a consequence of such specified acquisition, does not have its rating on long-term unsecured debt fall below BBB by Standard & Poor’s or Baa2 by Moody’s and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the Trade Receivable Facility, consolidated debt, including debt for which the Corporation is a co-borrower, may be reduced by the Corporation’s unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation. The Corporation was in compliance with this Ratio at June 30, 2014.

Effective June 23, 2014, the Corporation amended the Credit Agreement to ensure the impact of the business combination with TXI does not impair liquidity available under the Term Loan Facility and the Revolving Facility. The amendment adjusts consolidated EBITDA to add back fees, costs or expenses relating to the TXI business combination incurred on or prior to the closing of the combination not to exceed $95,000,000; any integration or similar costs or expenses related to the TXI business combination incurred in any period prior to the second anniversary of the closing of the TXI business combination not to exceed $70,000,000; and any make-whole fees incurred in connection with the redemption of TXI’s 9.25% senior notes due 2020. The amendment also temporarily increases the maximum Ratio to 3.75x at September 30, 2014. The Ratio returns to the pre-amendment maximum of 3.50x for the December 31, 2014 calculation date.

Available borrowings under the Revolving Facility are reduced by any outstanding letters of credit issued by the Corporation under the Revolving Facility. At June 30, 2014, December 31, 2013 and June 30, 2013, the Corporation had $2,507,000 of outstanding letters of credit issued under the Revolving Facility.

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three and six months ended June 30, 2014, the Corporation recognized $295,000 and $583,000, respectively, as additional interest expense. For the three and six months ended June 30, 2013, the Corporation recognized $275,000 and $544,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the forward starting interest rate swap agreements will increase annual interest expense by approximately $1,200,000 until the maturity of the 6.6% Senior Notes in 2018.

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Income Taxes (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Estimated Effective Income Tax Rate

	Six Months Ended June 30,
	2014			2013
Estimated effective income tax rate:
Continuing operations		29.8	%		35.0	%
Discontinued operations		26.4	%		26.2	%
Consolidated overall		29.8	%		35.2	%

Unrecognized Tax Benefits Excluding Interest Correlative Effects and Indirect Benefits

The Corporation’s unrecognized tax benefits, excluding interest, correlative effects and indirect benefits, are as follows:

	Six Months Ended June 30, 2014
	(Dollars in Thousands)
Unrecognized tax benefits at beginning of period	$	11,826
Gross increases – tax positions in prior years		1,898
Gross decreases – tax positions in prior years		(173	)
Gross increases – tax positions in current year		961
Unrecognized tax benefits at end of period	$	14,512

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2014

Organization

Organization

Martin Marietta Materials, Inc., (the “Corporation”) is engaged principally in the construction aggregates business. The Corporation’s aggregates product line accounted for 69% of consolidated 2013 net sales and includes crushed stone, sand and gravel, and is used for construction of highways and other infrastructure projects, and in the nonresidential and residential construction industries. Aggregates products are also used in the railroad, agricultural, utility and environmental industries. These aggregates products, along with the Corporation’s vertically-integrated operations, which include asphalt products, ready mixed concrete and road paving construction services (and which accounted for 19% of consolidated 2013 net sales), are sold and shipped from a network of nearly 300 quarries, distribution facilities and plants to customers in 30 states, Canada, the Bahamas and the Caribbean Islands. The aggregates and vertically-integrated operations are reported collectively as the Corporation’s “Aggregates business”.

Effective January 1, 2014, the Corporation made minor changes to the operations and management reporting structure of its Aggregates business, resulting in an immaterial change to its reportable segments. The Corporation currently conducts its Aggregates business through three reportable segments as follows:

AGGREGATES BUSINESS

Reportable Segments	Mid-America Group	Southeast Group	West Group
Operating Locations	Indiana, Iowa, northern Kansas, Kentucky, Maryland, Minnesota, eastern Nebraska, North Carolina, Ohio, South Carolina, Virginia, Washington and West Virginia	Alabama, Florida, Georgia, Mississippi, Tennessee, Nova Scotia and the Bahamas	Arkansas, Colorado, southern Kansas, Louisiana, Missouri, western Nebraska, Nevada, Oklahoma, Texas, Utah and Wyoming

In addition to the Aggregates business, the Corporation has a Specialty Products segment, which accounted for 12% of consolidated 2013 net sales, that produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

Basis of Presentation

Basis of Presentation

The accompanying unaudited consolidated financial statements of 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 in 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, 2013. In the opinion of management, the interim consolidated 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 consolidated results of operations for the three and six months ended June 30, 2014 are not indicative of the results expected for other interim periods or the full year. The consolidated balance sheet at December 31, 2013 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These consolidated 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, 2013. These consolidated financial statements do not reflect the Corporation’s acquisition of Texas Industries, Inc. (“TXI”) on July 1, 2014, which is discussed further in Note 11.

Early Adoption of New Accounting Standard

Early Adoption of New Accounting Standard

Effective January 1, 2014, the Corporation early adopted the Financial Accounting Standard Board’s (the “FASB”) final guidance on reporting discontinued operations. The guidance is to be applied prospectively and redefines discontinued operations to be either 1) a component of an entity or group of components that has been disposed of or is classified as held for sale that represents a strategic shift that has or will have a major effect on an entity’s operations and financial results or 2) a business that, upon acquisition, meets the criteria to be classified as held for sale. The adoption of the accounting standard did not have any effect on the Corporation’s financial position or results of operations.

Revenue Recognition Standard

Revenue Recognition Standard

The FASB issued an accounting standard update that amends the accounting guidance on revenue recognition. The amendments in this accounting standard update are intended to provide a more robust framework for addressing revenue issues, improve comparability of revenue recognition practices and improve disclosure requirements. The amendments are to be applied on a full retrospective or modified retrospective approach. The amendments in this accounting standard update are effective for interim and annual reporting periods beginning after December 15, 2016. The Corporation is currently evaluating the impact of the provisions of the accounting standard update, and at this time does not expect the impact to be material to its results of operations.

Reclassifications

Reclassifications

Prior-year segment information for the Aggregates business presented in Note 9 has been reclassified to conform to the presentation of the Corporation’s current reportable segments.

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss

Consolidated Comprehensive Earnings/Loss and Accumulated Other Comprehensive Loss

Consolidated comprehensive earnings/loss for the Corporation consist of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense, and are presented in the Corporation’s consolidated statements of earnings and comprehensive earnings.

Comprehensive earnings attributable to Martin Marietta Materials, Inc. is as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2014		2013			2014		2013
	(Dollars in Thousands)
Net earnings attributable to Martin Marietta Materials, Inc.	$	59,521	$	41,308		$	37,904	$	13,468
Other comprehensive earnings (loss), net of tax		603		(1,309	)		1,973		(88	)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	$	60,124	$	39,999		$	39,877	$	13,380

Comprehensive earnings (loss) attributable to noncontrolling interests, consisting of net earnings or loss and adjustments for the funded status of pension and postretirement benefit plans, is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014			2013
	(Dollars in Thousands)
Net earnings (loss) attributable to noncontrolling interests	$	103	$	259	$	(1,432	)	$	(1,230	)
Other comprehensive earnings, net of tax		1		3		2			5
Comprehensive earnings (loss) attributable to noncontrolling interests	$	104	$	262	$	(1,430	)	$	(1,225	)

Accumulated other comprehensive loss consists of unrealized gains and losses related to the funded status of pension and postretirement benefit plans; foreign currency translation; and the unamortized value of terminated forward starting interest rate swap agreements, and is presented on the Corporation’s consolidated balance sheets. Changes in accumulated other comprehensive loss, net of tax, are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Three Months Ended June 30, 2014
Balance at beginning of period	$	(44,267	)	$	4,816		$	(3,293	)	$	(42,744	)
Other comprehensive earnings before reclassifications, net of tax		(426	)		842			—			416
Amounts reclassified from accumulated other comprehensive loss, net of tax		8			—			179			187
Other comprehensive earnings, net of tax		(418	)		842			179			603
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Three Months Ended June 30, 2013
Balance at beginning of period	$	(106,296	)	$	5,323		$	(3,975	)	$	(104,948	)
Other comprehensive loss before reclassifications, net of tax		(2,278	)		(1,169	)		—			(3,447	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,971			—			167			2,138
Other comprehensive earnings, net of tax		(307	)		(1,169	)		167			(1,309	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $276,000 and $1,490,000 for the three months ended June 30, 2014 and 2013, respectively.

	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Six Months Ended June 30, 2014
Balance at beginning of period	$	(44,549	)	$	3,902		$	(3,467	)	$	(44,114	)
Other comprehensive (loss ) earnings before reclassifications, net of tax		(430	)		1,756			—			1,326
Amounts reclassified from accumulated other comprehensive loss, net of tax		294			—			353			647
Other comprehensive earnings, net of tax		(136	)		1,756			353			1,973
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Six Months Ended June 30, 2013
Balance at beginning of period	$	(108,189	)	$	6,157		$	(4,137	)	$	(106,169	)
Other comprehensive loss earnings before reclassifications, net of tax		(2,312	)		(2,003	)		—			(4,315	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		3,898			—			329			4,227
Other comprehensive earnings, net of tax		1,586			(2,003	)		329			(88	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $280,000 and $1,512,000 for the six months ended June 30, 2014 and 2013, respectively.

Changes in net noncurrent deferred tax assets recorded in accumulated other comprehensive loss are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Net Noncurrent Deferred Tax Assets
	Three Months Ended June 30, 2014
Balance at beginning of period	$	29,016		$	2,155		$	31,171
Tax effect of other comprehensive earnings		271			(116	)		155
Balance at end of period	$	29,287		$	2,039		$	31,326
	Three Months Ended June 30, 2013
Balance at beginning of period	$	69,641		$	2,600		$	72,241
Tax effect of other comprehensive earnings		201			(108	)		93
Balance at end of period	$	69,842		$	2,492		$	72,334
	Six Months Ended June 30, 2014
Balance at beginning of period	$	29,198		$	2,269		$	31,467
Tax effect of other comprehensive earnings		89			(230	)		(141	)
Balance at end of period	$	29,287		$	2,039		$	31,326
	Six Months Ended June 30, 2013
Balance at beginning of period	$	70,881		$	2,707		$	73,588
Tax effect of other comprehensive earnings		(1,039	)		(215	)		(1,254	)
Balance at end of period	$	69,842		$	2,492		$	72,334

Reclassifications out of accumulated other comprehensive loss are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,						Affected line items in
	2014			2013			2014			2013			the consolidated financial statements
	(Dollars in Thousands)
Pension and postretirement benefit plans
Amortization of:
Prior service credit	$	(791	)	$	(695	)	$	(1,404	)	$	(1,403	)
Actuarial loss		804			3,955			1,889			7,852
		13			3,260			485			6,449		Cost of sales; Selling, general & administrative expenses
Tax effect		(5	)		(1,289	)		(191	)		(2,551	)	Deferred income taxes
	$	8		$	1,971		$	294		$	3,898
Unamortized value of terminated forward starting interest rate swap
Additional interest expense	$	295		$	275		$	583		$	544		Interest expense
Tax effect		(116	)		(108	)		(230	)		(215	)	Deferred income taxes
	$	179		$	167		$	353		$	329

Earnings per Common Share

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings/loss 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. If there is a net loss, no amount of the undistributed loss is attributed to unvested participating securities. 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. For the three and six months ended June 30, 2014 and 2013, the diluted per-share computations reflect a change in the number of common shares outstanding 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 June 30,					Six Months Ended June 30,
	2014			2013		2014			2013
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	59,577		$	41,203	$	37,974		$	13,651
Less: Distributed and undistributed earnings attributable to unvested awards		246			197		154			182
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		59,331			41,006		37,820			13,469
Basic and diluted net (loss) earnings available to common shareholders from discontinued operations		(56	)		105		(70	)		(183	)
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	59,275		$	41,111	$	37,750		$	13,286
Basic weighted-average common shares outstanding		46,395			46,129		46,355			46,079
Effect of dilutive employee and director awards		134			131		122			138
Diluted weighted-average common shares outstanding		46,529			46,260		46,477			46,217

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2014

Commitments and Contingencies

8. Commitments and Contingencies

Legal and Administrative Proceedings

The Corporation is engaged in certain legal and administrative proceedings incidental to its normal business activities. In the opinion of management and counsel, based upon currently-available facts, it is remote that the ultimate outcome of any litigation and other proceedings, including those pertaining to environmental matters, relating to the Corporation and its subsidiaries, will have a material adverse effect on the overall results of the Corporation’s operations, its cash flows or its financial position.

Environmental and Governmental Regulations

The United States Environmental Protection Agency (“EPA”) includes the lime industry as a national enforcement priority under the federal Clean Air Act (“CAA”). As part of the industry wide effort, the EPA issued Notices of Violation/Findings of Violation (“NOVs”) to the Corporation in 2010 and 2011 regarding the Corporation’s compliance with the CAA New Source Review (“NSR”) program at its Specialty Products dolomitic lime manufacturing plant in Woodville, Ohio. The Corporation has been providing information to the EPA in response to these NOVs and has had several meetings with the EPA. The Corporation believes it is in substantial compliance with the NSR program. At this time, the Corporation cannot reasonably estimate what likely penalties or upgrades to equipment might ultimately be required. The Corporation believes that any costs related to any upgrades to capital equipment will be spread over time and will not have a material adverse effect on the Corporation’s results of operations or its financial condition, but can give no assurance that the ultimate resolution of this matter will not have a material adverse effect on the financial condition or results of operations of the Specialty Products segment of the business.

Borrowing Arrangements with Affiliate

The Corporation is a co-borrower with an unconsolidated affiliate for a $24,000,000 revolving line of credit agreement with Fifth Third Bank. The line of credit expires in August 2014. The affiliate has agreed to reimburse and indemnify the Corporation for any payments and expenses the Corporation may incur from this agreement. The Corporation holds a lien on the affiliate’s membership interest in a joint venture as collateral for payment under the revolving line of credit.

In September 2013, the Corporation loaned $3,402,000 to this unconsolidated affiliate to repay in full the outstanding balance of the affiliate’s loan with Bank of America, N.A. and entered into a loan agreement with the affiliate for monthly repayment of principal and interest of that loan amount through May 2016. The Corporation holds a lien on the affiliate’s property as collateral for payment under the loan and security agreement. As of June 30, 2014 and December 31, 2013, the amount due from the affiliate related to this loan was $2,455,000 and $2,984,000, respectively.

In addition, the Corporation has a $6,000,000 outstanding loan due from this unconsolidated affiliate as of June 30, 2014 and December 31, 2013.

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Income Taxes

6 Months Ended

Jun. 30, 2014

Income Taxes

6. Income Taxes

	Six Months Ended June 30,
	2014			2013
Estimated effective income tax rate:
Continuing operations		29.8	%		35.0	%
Discontinued operations		26.4	%		26.2	%
Consolidated overall		29.8	%		35.2	%

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 statutory depletion deduction for mineral reserves, the impact of foreign losses for which no tax benefit was realized 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 September 13, 2013, the U.S. Treasury Department and Internal Revenue Service issued final regulations addressing costs incurred in acquiring, producing or improving tangible property (the “tangible property regulations”). The tangible property regulations required the Corporation to make additional tax accounting method changes as of January 1, 2014. As of December 31, 2013, the Corporation estimated the tax impact of the regulatory change and recorded an increase in noncurrent deferred tax liabilities in the amount of $1,334,000, with a corresponding reduction in current taxes payable.

The Corporation’s unrecognized tax benefits, excluding interest, correlative effects and indirect benefits, are as follows:

	Six Months Ended June 30, 2014
	(Dollars in Thousands)
Unrecognized tax benefits at beginning of period	$	11,826
Gross increases – tax positions in prior years		1,898
Gross decreases – tax positions in prior years		(173	)
Gross increases – tax positions in current year		961
Unrecognized tax benefits at end of period	$	14,512

The Corporation records interest accrued in relation to unrecognized tax benefits as income tax expense. Penalties, if incurred, are recorded as operating expenses in the consolidated statements of earnings.

The Corporation anticipates that it is reasonably possible that unrecognized tax benefits may decrease up to $7,123,000, excluding indirect benefits, during the twelve months ending June 30, 2015 as a result of expected settlements with taxing authorities and the expiration of the foreign and domestic statute of limitations for the 2009 and 2010 tax years, respectively.

At June 30, 2014, unrecognized tax benefits of $7,939,000 related to interest accruals and permanent income tax differences, net of federal tax benefits, would have favorably affected the Corporation’s effective income tax rate if recognized.

The Corporation’s open tax years subject to federal, foreign or state examinations are 2009 through 2013.

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Pension and Postretirement Benefits

6 Months Ended

Jun. 30, 2014

Pension and Postretirement Benefits

7. Pension and Postretirement Benefits

The estimated components of the recorded net periodic benefit cost (credit) for pension and postretirement benefits are as follows:

	Three Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	3,092		$	4,060		$	51		$	56
Interest cost		5,624			5,799			305			251
Expected return on assets		(6,677	)		(6,717	)		—			—
Amortization of:
Prior service cost (credit)		96			113			(887	)		(808	)
Actuarial loss (gain)		877			3,949			(73	)		6
Net periodic benefit cost (credit)	$	3,012		$	7,204		$	(604	)	$	(495	)
	Six Months Ended June 30,
	Pension						Postretirement Benefits
	2014			2013			2014			2013
	(Dollars in Thousands)
Service cost	$	7,131		$	8,060		$	93		$	113
Interest cost		12,971			11,512			559			506
Expected return on assets		(15,400	)		(13,335	)		—			—
Amortization of:
Prior service cost (credit)		223			224			(1,627	)		(1,627	)
Actuarial loss (gain)		2,022			7,840			(133	)		12
Net periodic benefit cost (credit)	$	6,947		$	14,301		$	(1,108	)	$	(996	)

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Business Segments

6 Months Ended

Jun. 30, 2014

Business Segments

9. Business Segments

The Aggregates business contains three reportable business segments: Mid-America Group, Southeast Group and West Group. The Corporation also has a Specialty Products segment.

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, business development expenses, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Total revenues:
Mid-America Group	$	240,526		$	217,516		$	356,235		$	337,056
Southeast Group		75,168			60,442			134,988			116,184
West Group		286,811			222,024			477,598			370,420
Total Aggregates Business		602,505			499,982			968,821			823,660
Specialty Products		66,720			61,344			129,034			121,574
Total	$	669,225		$	561,326		$	1,097,855		$	945,234
Net sales:
Mid-America Group	$	218,703		$	198,215		$	325,236		$	308,402
Southeast Group		70,725			55,261			126,106			106,584
West Group		250,589			197,224			411,004			324,603
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Earnings (Loss) from operations:
Mid-America Group	$	57,283		$	47,717		$	45,517		$	33,753
Southeast Group		(1,302	)		(5,176	)		(7,413	)		(13,563	)
West Group		30,873			16,395			32,954			8,270
Total Aggregates Business		86,854			58,936			71,058			28,460
Specialty Products		20,995			18,726			37,280			35,804
Corporate		(11,608	)		(8,027	)		(27,994	)		(17,950	)
Total	$	96,241		$	69,635		$	80,344		$	46,314

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Assets employed:
Mid-America Group	$	1,311,860	$	1,242,394	$	1,185,684
Southeast Group		606,933		611,906		588,094
West Group		1,084,291		1,030,599		1,077,477
Total Aggregates Business		3,003,084		2,884,899		2,851,255
Specialty Products		151,129		154,024		153,542
Corporate		201,830		220,903		226,322
Total	$	3,356,043	$	3,259,826	$	3,231,119

The Aggregates business includes the aggregates product line and vertically-integrated operations, which include asphalt, ready mixed concrete and road paving product lines. All vertically-integrated operations reside in the West Group. The following tables provide net sales and gross profit by product line for the Aggregates business, which are reconciled to consolidated amounts, as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in Thousands)
Net sales:
Aggregates	$	421,974		$	357,241		$	685,858		$	605,031
Asphalt		22,627			18,811			33,125			28,445
Ready Mixed Concrete		52,379			35,305			90,388			61,582
Road Paving		43,037			39,343			52,975			44,531
Total Aggregates Business		540,017			450,700			862,346			739,589
Specialty Products		61,920			56,632			119,269			111,801
Total	$	601,937		$	507,332		$	981,615		$	851,390
Gross profit (loss):
Aggregates	$	100,142		$	78,942		$	110,194		$	81,003
Asphalt		4,869			4,903			3,443			2,448
Ready Mixed Concrete		6,982			1,869			9,926			1,788
Road Paving		(249	)		(284	)		(4,231	)		(4,571	)
Total Aggregates Business		111,744			85,430			119,332			80,668
Specialty Products		23,394			21,284			42,149			40,866
Corporate		464			282			(43	)		(1,717	)
Total	$	135,602		$	106,996		$	161,438		$	119,817

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Purchase of Noncontrolling Interest in Joint Venture - Additional Information (Detail) (USD $)	0 Months Ended
	Apr. 02, 2014	Apr. 02, 2014
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Payment to remaining joint venture interest	$ 19,604,000
Remaining joint venture interest		50.00%

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Business Developments - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jan. 27, 2014 Texas Industries Inc.	Jun. 30, 2014 Texas Industries Inc.	Jul. 01, 2014 Texas Industries Inc. Subsequent Event
Schedule Of Business Development [Line Items]
Number of shares issued per single share			0.70
Common shares issued to former shareholders			20,300,000
Stock price					$ 132.00
Aggregate value of common shares issued to former shareholders					$ 2,680,000,000
Business development expenses				12,781,000
Acquisition integration expenses	$ 1,942,000	$ 2,210,000		$ 2,210,000

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Inventories, Net (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Inventories Net

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Finished products	$	358,759	$	368,334	$	366,320
Products in process and raw materials		20,732		16,077		18,701
Supplies and expendable parts		65,287		61,922		59,437
		444,778		446,333		444,458
Less: Allowances		96,610		99,026		95,585
Total	$	348,168	$	347,307	$	348,873

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Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2014

Components of Change in Other Assets and Liabilities, Net

The components of the change in other assets and liabilities, net, are as follows:

	Six Months Ended
	June 30,
	2014			2013
	(Dollars in Thousands)
Other current and noncurrent assets	$	(6,139	)	$	(3,729	)
Accrued salaries, benefits and payroll taxes		(755	)		(5,366	)
Accrued insurance and other taxes		3,911			1,996
Accrued income taxes		16,678			(430	)
Accrued pension, postretirement and postemployment benefits		4,281			2,122
Other current and noncurrent liabilities		(389	)		10,171
	$	17,587		$	4,764

Schedule of Noncash Investing and Financing Activities

Noncash investing and financing activities are as follows:

	Six Months Ended
	June 30,
	2014		2013
	(Dollars in Thousands)
Noncash investing and financing activities:
Acquisition of assets through capital lease	$	6,333	$	—

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Components of Change in Other Assets and Liabilities Net (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Schedule of Cash Flow, Supplemental
Other current and noncurrent assets	$ (6,139)	$ (3,729)
Accrued salaries, benefits and payroll taxes	(755)	(5,366)
Accrued insurance and other taxes	3,911	1,996
Accrued income taxes	16,678	(430)
Accrued pension, postretirement and postemployment benefits	4,281	2,122
Other current and noncurrent liabilities	(389)	10,171
Change in other assets and liabilities	$ 17,587	$ 4,764

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Income Taxes - Additional Information (Detail) (USD $)			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Minimum	Jun. 30, 2014 Maximum	Jun. 30, 2014 Foreign Tax Authority	Jun. 30, 2014 Domestic Tax Authority
Income Tax Contingency
Increase noncurrent deferred tax liabilities		$ 1,334,000
Estimated unrecognized tax benefits, decrease as a result of tax position taken in prior years	7,123,000
Expiration date of statute of limitations					2009	2010
Unrecognized tax benefits that would impact effective tax rate	$ 7,939,000
Open tax years			2009	2013

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Consolidated Statements of Earnings and Comprehensive Earnings (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
(Loss) Gain on discontinued operations, related tax (benefit) expense	$ (24)	$ 11	$ (25)	$ (65)

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Inventories, Net

6 Months Ended

Jun. 30, 2014

Inventories, Net

3. Inventories, Net

	June 30, 2014		December 31, 2013		June 30, 2013
	(Dollars in Thousands)
Finished products	$	358,759	$	368,334	$	366,320
Products in process and raw materials		20,732		16,077		18,701
Supplies and expendable parts		65,287		61,922		59,437
		444,778		446,333		444,458
Less: Allowances		96,610		99,026		95,585
Total	$	348,168	$	347,307	$	348,873

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Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013 State Facility
Significant Accounting Policies [Line Items]
Number of quarries distribution facilities and plants					300
Number of states with aggregates business sales by destination					30
Other comprehensive loss before reclassifications for pension and postretirement benefit plans, tax	$ 276,000	$ 1,490,000	$ 280,000	$ 1,512,000
Aggregates Product Line | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					69.00%
Vertically Integrated | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					19.00%
Specialty Products | Sales
Significant Accounting Policies [Line Items]
Total net sales, percentage					12.00%

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Long-Term Debt - Additional information (Detail) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended				0 Months Ended					0 Months Ended		0 Months Ended	6 Months Ended			0 Months Ended			6 Months Ended				0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Including Acquisition Bridge Debt	Jun. 30, 2014 Excluding Acquisition Bridge Debt	Jun. 30, 2014 Minimum	Jun. 30, 2014 Texas Industries Inc.	Jun. 23, 2014 Texas Industries Inc. Maximum Amended	Dec. 31, 2014 Texas Industries Inc. Maximum Scenario Forecast Amended	Sep. 30, 2014 Texas Industries Inc. Maximum Scenario Forecast Amended	Jun. 23, 2014 4.25% Senior Notes due 2024	Jun. 23, 2014 4.25% Senior Notes due 2024	Jun. 23, 2014 Floating Rate Senior Notes due in 2017	Jun. 23, 2014 Floating Rate Senior Notes due in 2017	Jun. 23, 2014 Floating Rate Senior Notes due in 2017 three-month LIBOR	Jun. 30, 2014 6.6% Senior Notes, Due 2018	Dec. 31, 2013 6.6% Senior Notes, Due 2018	Jun. 30, 2013 6.6% Senior Notes, Due 2018	Jun. 23, 2014 9.25% Senior Notes due 2020	Jun. 23, 2014 9.25% Senior Notes due 2020 Texas Industries Inc. Amended	Jun. 23, 2014 9.25% Senior Notes due 2020 Texas Industries Inc. Amended	Jun. 30, 2014 Revolving Facility	Dec. 31, 2013 Revolving Facility	Jun. 30, 2013 Revolving Facility	Jun. 30, 2014 Term Loan Facility	Apr. 18, 2014 Trade Receivable Credit Facility	Jun. 30, 2014 Trade Receivable Credit Facility	Dec. 31, 2013 Trade Receivable Credit Facility	Jun. 30, 2013 Trade Receivable Credit Facility	Jul. 01, 2014 Trade Receivable Credit Facility Subsequent Event	Jul. 01, 2014 Trade Receivable Credit Facility Subsequent Event Credit Agreement Amendment
Debt Instrument
Senior notes	$ 1,084,801,000	$ 1,093,319,000	$ 1,084,801,000	$ 1,093,319,000	$ 1,030,921,000									$ 400,000,000		$ 300,000,000		$ 299,006,000	$ 298,893,000	$ 298,783,000
Interest rate on notes														4.25%				6.60%					9.25%
Maturity date, year													2024		2017			2018				2020
Basis spread on variable rate																	1.10%
Redemption of debt																					650,000,000
Outstanding borrowing under credit facility																								40,000,000		50,000,000			311,792,000	213,386,000	253,020,000
Credit facility, maturity date																												Sep. 30, 2014
Credit facility commitment																								350,000,000			250,000,000					150,000,000	250,000,000
Senior unsecured revolving facility, maturity period																								5 years
Debt covenant						3.50x	3.75x				3.50x	3.75x
Reduction of consolidated debt in the debt ratio calculation								50,000,000
Maximum consolidated debt reduction for unrestricted cash and cash equivalents for debt covenant calculation			200,000,000
Amendment consolidated EBITDA										95,000,000
Acquisition integration expenses	1,942,000		2,210,000						2,210,000	70,000,000
Outstanding letters of credit																								2,507,000	2,507,000	2,507,000
Additional interest expense	295,000	275,000	583,000	544,000
Increase in annual interest expense due to ongoing amortization of the terminated value of the swap agreements																		$ 1,200,000

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Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2014

Changes in Accumulated Other Comprehensive Earnings, Net of Tax

Changes in accumulated other comprehensive loss, net of tax, are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Three Months Ended June 30, 2014
Balance at beginning of period	$	(44,267	)	$	4,816		$	(3,293	)	$	(42,744	)
Other comprehensive earnings before reclassifications, net of tax		(426	)		842			—			416
Amounts reclassified from accumulated other comprehensive loss, net of tax		8			—			179			187
Other comprehensive earnings, net of tax		(418	)		842			179			603
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Three Months Ended June 30, 2013
Balance at beginning of period	$	(106,296	)	$	5,323		$	(3,975	)	$	(104,948	)
Other comprehensive loss before reclassifications, net of tax		(2,278	)		(1,169	)		—			(3,447	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,971			—			167			2,138
Other comprehensive earnings, net of tax		(307	)		(1,169	)		167			(1,309	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

The other comprehensive loss before reclassifications for pension and postretirement benefit plans is net of tax of $276,000 and $1,490,000 for the three months ended June 30, 2014 and 2013, respectively.

	Pension and Postretirement Benefit Plans			Foreign Currency			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Accumulated Other Comprehensive Loss
	Six Months Ended June 30, 2014
Balance at beginning of period	$	(44,549	)	$	3,902		$	(3,467	)	$	(44,114	)
Other comprehensive (loss ) earnings before reclassifications, net of tax		(430	)		1,756			—			1,326
Amounts reclassified from accumulated other comprehensive loss, net of tax		294			—			353			647
Other comprehensive earnings, net of tax		(136	)		1,756			353			1,973
Balance at end of period	$	(44,685	)	$	5,658		$	(3,114	)	$	(42,141	)
	Six Months Ended June 30, 2013
Balance at beginning of period	$	(108,189	)	$	6,157		$	(4,137	)	$	(106,169	)
Other comprehensive loss earnings before reclassifications, net of tax		(2,312	)		(2,003	)		—			(4,315	)
Amounts reclassified from accumulated other comprehensive loss, net of tax		3,898			—			329			4,227
Other comprehensive earnings, net of tax		1,586			(2,003	)		329			(88	)
Balance at end of period	$	(106,603	)	$	4,154		$	(3,808	)	$	(106,257	)

Noncurrent Deferred Tax Assets Recorded in Accumulated Other Comprehensive Loss

Changes in net noncurrent deferred tax assets recorded in accumulated other comprehensive loss are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Net Noncurrent Deferred Tax Assets
	Three Months Ended June 30, 2014
Balance at beginning of period	$	29,016		$	2,155		$	31,171
Tax effect of other comprehensive earnings		271			(116	)		155
Balance at end of period	$	29,287		$	2,039		$	31,326
	Three Months Ended June 30, 2013
Balance at beginning of period	$	69,641		$	2,600		$	72,241
Tax effect of other comprehensive earnings		201			(108	)		93
Balance at end of period	$	69,842		$	2,492		$	72,334
	Six Months Ended June 30, 2014
Balance at beginning of period	$	29,198		$	2,269		$	31,467
Tax effect of other comprehensive earnings		89			(230	)		(141	)
Balance at end of period	$	29,287		$	2,039		$	31,326
	Six Months Ended June 30, 2013
Balance at beginning of period	$	70,881		$	2,707		$	73,588
Tax effect of other comprehensive earnings		(1,039	)		(215	)		(1,254	)
Balance at end of period	$	69,842		$	2,492		$	72,334

Reclassification Out of Accumulated Other Comprehensive Loss

Reclassifications out of accumulated other comprehensive loss are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,						Affected line items in
	2014			2013			2014			2013			the consolidated financial statements
	(Dollars in Thousands)
Pension and postretirement benefit plans
Amortization of:
Prior service credit	$	(791	)	$	(695	)	$	(1,404	)	$	(1,403	)
Actuarial loss		804			3,955			1,889			7,852
		13			3,260			485			6,449		Cost of sales; Selling, general & administrative expenses
Tax effect		(5	)		(1,289	)		(191	)		(2,551	)	Deferred income taxes
	$	8		$	1,971		$	294		$	3,898
Unamortized value of terminated forward starting interest rate swap
Additional interest expense	$	295		$	275		$	583		$	544		Interest expense
Tax effect		(116	)		(108	)		(230	)		(215	)	Deferred income taxes
	$	179		$	167		$	353		$	329

Basic and Diluted Earnings per Common Share

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2014			2013		2014			2013
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	59,577		$	41,203	$	37,974		$	13,651
Less: Distributed and undistributed earnings attributable to unvested awards		246			197		154			182
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		59,331			41,006		37,820			13,469
Basic and diluted net (loss) earnings available to common shareholders from discontinued operations		(56	)		105		(70	)		(183	)
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	59,275		$	41,111	$	37,750		$	13,286
Basic weighted-average common shares outstanding		46,395			46,129		46,355			46,079
Effect of dilutive employee and director awards		134			131		122			138
Diluted weighted-average common shares outstanding		46,529			46,260		46,477			46,217

Parent

Comprehensive Earnings (Loss) Attributable

Comprehensive earnings attributable to Martin Marietta Materials, Inc. is as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2014		2013			2014		2013
	(Dollars in Thousands)
Net earnings attributable to Martin Marietta Materials, Inc.	$	59,521	$	41,308		$	37,904	$	13,468
Other comprehensive earnings (loss), net of tax		603		(1,309	)		1,973		(88	)
Comprehensive earnings attributable to Martin Marietta Materials, Inc.	$	60,124	$	39,999		$	39,877	$	13,380

Noncontrolling Interest

Comprehensive Earnings (Loss) Attributable

Comprehensive earnings (loss) attributable to noncontrolling interests, consisting of net earnings or loss and adjustments for the funded status of pension and postretirement benefit plans, is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014			2013
	(Dollars in Thousands)
Net earnings (loss) attributable to noncontrolling interests	$	103	$	259	$	(1,432	)	$	(1,230	)
Other comprehensive earnings, net of tax		1		3		2			5
Comprehensive earnings (loss) attributable to noncontrolling interests	$	104	$	262	$	(1,430	)	$	(1,225	)