10-Q

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended June 30, 2010

OR

o 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 þ No o

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 þ No o

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 þ Accelerated filer o  Non-accelerated filer o
(Do not check if a smaller reporting company) Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes o No þ

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 30, 2010
Common Stock, $0.01 par value	45,523,432

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

	Page
Part I. Financial Information:
Item 1. Financial Statements.
Consolidated Balance Sheets — June 30, 2010, December 31, 2009 and June 30, 2009		3
Consolidated Statements of Earnings - Three and Six Months Ended June 30, 2010 and 2009		4
Consolidated Statements of Cash Flows - Six Months Ended June 30, 2010 and 2009		5
Consolidated Statement of Total Equity		6
Condensed Notes to Consolidated Financial Statements		7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.		19
Item 3. Quantitative and Qualitative Disclosures About Market Risk.		40
Item 4. Controls and Procedures.		41
Part II. Other Information:
Item 1. Legal Proceedings.		42
Item 1A. Risk Factors.		42
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.		42
Item 6. Exhibits.		43
Signatures		44
Exhibit Index		45
EX-31.01
EX-31.02
EX-32.01
EX-32.02
EX-101 INSTANCE DOCUMENT
EX-101 SCHEMA DOCUMENT
EX-101 CALCULATION LINKBASE DOCUMENT
EX-101 LABELS LINKBASE DOCUMENT
EX-101 PRESENTATION LINKBASE DOCUMENT
EX-101 DEFINITION LINKBASE DOCUMENT

Page 2 of 45

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS

	June 30,			December 31,			June 30,
	2010			2009			2009
	(Unaudited)			(Audited)			(Unaudited)
	(Dollars in Thousands, Except Per Share Data)
ASSETS
Current Assets:
Cash and cash equivalents	$	32,095		$	263,591		$	133,380
Accounts receivable, net		257,761			162,815			250,340
Inventories, net		319,842			332,569			333,887
Current deferred income tax benefits		72,750			60,303			56,105
Other current assets		26,018			37,582			28,411
Total Current Assets		708,466			856,860			802,123
Property, plant and equipment		3,526,485			3,465,978			3,408,415
Allowances for depreciation, depletion and amortization		(1,832,068	)		(1,773,073	)		(1,695,691	)
Net property, plant and equipment		1,694,417			1,692,905			1,712,724
Goodwill		624,224			624,224			629,087
Other intangibles, net		18,284			12,469			13,304
Other noncurrent assets		51,001			52,825			49,955
Total Assets	$	3,096,392		$	3,239,283		$	3,207,193
LIABILITIES AND EQUITY
Current Liabilities:
Bank overdraft	$	3,403		$	1,737		$	1,692
Accounts payable		80,238			52,107			75,203
Accrued salaries, benefits and payroll taxes		15,690			15,222			15,795
Pension and postretirement benefits		18,693			18,823			3,935
Accrued insurance and other taxes		28,802			24,274			30,498
Income taxes		1,862			—			1,646
Current maturities of long-term debt and short-term facilities		244,147			226,119			233,229
Accrued interest		11,759			12,751			12,784
Other current liabilities		10,032			22,520			14,282
Total Current Liabilities		414,626			373,553			389,064
Long-term debt		811,938			1,023,492			1,048,729
Pension, postretirement and postemployment benefits		158,787			160,354			211,229
Noncurrent deferred income taxes		196,896			195,946			173,800
Other noncurrent liabilities		97,348			79,527			82,828
Total Liabilities		1,679,595			1,832,872			1,905,650
Equity:
Common stock, par value $0.01 per share		454			453			445
Preferred stock, par value $0.01 per share		—			—			—
Additional paid-in capital		392,519			381,173			315,534
Accumulated other comprehensive loss		(69,488	)		(75,084	)		(96,495	)
Retained earnings		1,052,159			1,058,698			1,042,581
Total Shareholders’ Equity		1,375,644			1,365,240			1,262,065
Noncontrolling interests		41,153			41,171			39,478
Total Equity		1,416,797			1,406,411			1,301,543
Total Liabilities and Equity	$	3,096,392		$	3,239,283		$	3,207,193

See accompanying condensed notes to consolidated financial statements.

Page 3 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EARNINGS

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
	(In Thousands, Except Per Share Data)
	(Unaudited)
Net Sales	$	442,784		$	410,689		$	738,345		$	740,530
Freight and delivery revenues		61,846			54,696			107,229			99,415
Total revenues		504,630			465,385			845,574			839,945
Cost of sales		325,086			298,972			601,034			580,278
Freight and delivery costs		61,846			54,696			107,229			99,415
Total cost of revenues		386,932			353,668			708,263			679,693
Gross Profit		117,698			111,717			137,311			160,252
Selling, general & administrative expenses		33,559			36,766			67,130			73,923
Research and development		22			163			36			299
Other operating (income) and expenses, net		(6,531	)		1,843			(7,638	)		2,137
Earnings from Operations		90,648			72,945			77,783			83,893
Interest expense		16,820			18,651			34,436			37,176
Other nonoperating (income) and expenses, net		1,334			(1,340	)		733			(318	)
Earnings from continuing operations before taxes on income		72,494			55,634			42,614			47,035
Income tax expense		17,534			15,536			12,550			13,363
Earnings from Continuing Operations		54,960			40,098			30,064			33,672
(Loss) Gain on discontinued operations, net of related tax expense of $15, $215, $53 and $234, respectively		(12	)		487			136			540
Consolidated net earnings		54,948			40,585			30,200			34,212
Less: Net earnings (loss) attributable to noncontrolling interests		549			1,723			(20	)		1,114
Net Earnings Attributable to Martin Marietta Materials, Inc.	$	54,399		$	38,862		$	30,220		$	33,098
Net Earnings Attributable to Martin Marietta Materials, Inc.
Earnings from continuing operations	$	54,411		$	38,375		$	30,084		$	32,558
(Loss) Earnings from discontinued operations		(12	)		487			136			540
	$	54,399		$	38,862		$	30,220		$	33,098
Net Earnings Attributable to Martin Marietta Materials, Inc.
Per Common Share
Basic from continuing operations attributable to common shareholders	$	1.18		$	0.85		$	0.66		$	0.74
Discontinued operations attributable to common shareholders		—			0.01			—			0.01
	$	1.18		$	0.86		$	0.66		$	0.75
Diluted from continuing operations attributable to common shareholders	$	1.18		$	0.85		$	0.65		$	0.74
Discontinued operations attributable to common shareholders		—			0.01			—			0.01
	$	1.18		$	0.86		$	0.65		$	0.75
Weighted-Average Common Shares Outstanding
Basic		45,463			44,554			45,431			43,216
Diluted		45,657			44,753			45,619			43,404
Cash Dividends Per Common Share	$	0.40		$	0.40		$	0.80		$	0.80

See accompanying condensed notes to consolidated financial statements.

Page 4 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended
	June 30,
	2010			2009
	(Dollars in Thousands)
	(Unaudited)
Cash Flows from Operating Activities:
Consolidated net earnings	$	30,200		$	34,212
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization		90,500			87,375
Stock-based compensation expense		8,443			13,039
(Gains) Losses on divestitures and sales of assets		(4,019	)		3,946
Deferred income taxes		4,797			2,478
Excess tax benefits from stock-based compensation transactions		(1,491	)		(1,277	)
Other items, net		1,050			5
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net		(94,946	)		(39,111	)
Inventories, net		12,865			(13,950	)
Accounts payable		25,762			12,085
Other assets and liabilities, net		13,114			17,856
Net Cash Provided by Operating Activities		86,275			116,658
Cash Flows from Investing Activities:
Additions to property, plant and equipment		(68,554	)		(74,750	)
Acquisitions, net		(28,067	)		(49,549	)
Proceeds from divestitures and sales of assets		3,827			5,803
Loan to affiliate		—			(4,000	)
Net Cash Used for Investing Activities		(92,794	)		(122,496	)
Cash Flows from Financing Activities:
Borrowings of long-term debt		125,000			230,000
Repayments of long-term debt		(318,757	)		(103,257	)
Repayments on short-term facilities, net		—			(200,000	)
Debt issuance costs		(80	)		(2,285	)
Change in bank overdraft		1,666			(2,985	)
Payments on capital lease obligations		(161	)		(81	)
Dividends paid		(36,759	)		(34,934	)
Distributions to owners of noncontrolling interests		—			(2,331	)
Purchase of subsidiary shares from noncontrolling interest		—			(17,060	)
Issuances of common stock		2,623			233,080
Excess tax benefits from stock-based compensation transactions		1,491			1,277
Net Cash (Used for) Provided by Financing Activities		(224,977	)		101,424
Net (Decrease) Increase in Cash and Cash Equivalents		(231,496	)		95,586
Cash and Cash Equivalents, beginning of period		263,591			37,794
Cash and Cash Equivalents, end of period	$	32,095		$	133,380
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	34,583		$	37,055
Cash (refunds) payments for income taxes	$	(8,021	)	$	(4,395	)

See accompanying condensed notes to consolidated financial statements.

Page 5 of 45

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, 2009		45,399	$	453	$	381,173	$	(75,084	)	$	1,058,698		$	1,365,240		$	41,171		$	1,406,411
Consolidated net earnings (loss)		—		—		—		—			30,220			30,220			(20	)		30,200
Unrecognized actuarial losses and prior service costs related to pension and postretirement benefits, net of tax benefit of $572		—		—		—		5,183			—			5,183			2			5,185
Foreign currency translation gain		—		—		—		146			—			146			—			146
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax benefit of $174		—		—		—		267			—			267			—			267
Consolidated comprehensive earnings (loss)														35,816			(18	)		35,798
Dividends declared		—		—		—		—			(36,759	)		(36,759	)		—			(36,759	)
Issuances of common stock for stock award plans		121		1		2,903		—			—			2,904			—			2,904
Stock-based compensation expense		—		—		8,443		—			—			8,443			—			8,443
Balance at June 30, 2010		45,520	$	454	$	392,519	$	(69,488	)	$	1,052,159		$	1,375,644		$	41,153		$	1,416,797

See accompanying condensed notes to consolidated financial statements.

Page 6 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Significant Accounting Policies

Basis of Presentation

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

Earnings per Common Share

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

Page 7 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

1. Significant Accounting Policies (continued)

Earnings per Common Share (continued)

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

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2010			2009		2010		2009
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	54,411		$	38,375	$	30,084	$	32,558
Less: Distributed and undistributed earnings attributable to unvested awards		574			533		392		504
Basic and diluted net earnings from continuing operations attributable to common shareholders of Martin Marietta Materials, Inc.		53,837			37,842		29,692		32,054
Basic and diluted net (loss) earnings from discontinued operations attributable to common shareholders		(12	)		487		136		540
Basic and diluted net earnings attributable to common shareholders of Martin Marietta Materials, Inc.	$	53,825		$	38,329	$	29,828	$	32,594
Basic weighted-average common shares outstanding		45,463			44,554		45,431		43,216
Effect of dilutive employee and director awards		194			199		188		188
Diluted weighted-average common shares outstanding		45,657			44,753		45,619		43,404

Comprehensive Earnings

Consolidated comprehensive earnings for the Corporation consist of consolidated net earnings; amortization of actuarial losses and prior service costs related to pension and postretirement benefits; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense. Consolidated comprehensive earnings for the three and six months ended June 30, 2010 were $55,990,000 and $35,798,000, respectively. For the three and six months ended June 30, 2009, consolidated comprehensive earnings were $43,842,000 and $39,388,000, respectively.

Page 8 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

2. Discontinued Operations

Operations that are disposed of or permanently shut down represent discontinued operations, and, therefore, the results of their operations through the dates of disposal and any gain or loss on disposals are included in discontinued operations in the consolidated statements of earnings. All discontinued operations relate to the Aggregates business.

Discontinued operations included the following net sales, pretax gain on operations, pretax gain on disposals, income tax expense and overall net earnings or loss:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2010			2009		2010		2009
	(Dollars in Thousands)
Net sales	$	41		$	671	$	58	$	1,212
Pretax gain on operations	$	3		$	699	$	189	$	771
Pretax gain on disposals		—			3		—		3
Pretax gain		3			702		189		774
Income tax expense		15			215		53		234
Net (loss) earnings	$	(12	)	$	487	$	136	$	540

3. Inventories, Net

	June 30,			December 31,			June 30,
	2010			2009			2009
	(Dollars in Thousands)
Finished products	$	278,607		$	289,051		$	285,369
Products in process and raw materials		14,937			16,296			17,389
Supplies and expendable parts		46,095			47,554			48,888
		339,639			352,901			351,646
Less allowances		(19,797	)		(20,332	)		(17,759	)
Total	$	319,842		$	332,569		$	333,887

Page 9 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

4. Goodwill and Intangible Assets

During the three and six months ended June 30, 2010, there were no changes in goodwill.

During the six months ended June 30, 2010, the Corporation acquired use rights of $6,600,000 related to its Aggregates business. The use rights are deemed to have an indefinite life and are not being amortized.

5. Long-Term Debt

	June 30,			December 31,			June 30,
	2010			2009			2009
	(Dollars in Thousands)
6.875% Notes, due 2011	$	242,109		$	242,092		$	249,910
6.6% Senior Notes, due 2018		298,198			298,111			298,027
7% Debentures, due 2025		124,382			124,371			124,360
6.25% Senior Notes, due 2037		247,866			247,851			247,836
Floating Rate Senior Notes, due 2010		—			217,502			224,781
Term Loan, due 2012, interest rate of 3.347% at June 30, 2010		111,750			111,750			128,375
AR Credit Facility, interest rate of 3.125%		25,000			—			—
Other notes		6,780			7,934			8,669
Total debt		1,056,085			1,249,611			1,281,958
Less current maturities		(244,147	)		(226,119	)		(233,229	)
Long-term debt	$	811,938		$	1,023,492		$	1,048,729

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

At June 30, 2010, the Corporation had $244,147,000 of current maturities of long-term debt as $242,109,000 of 6.875% Notes were reclassified to current to reflect their maturity date of April 2011.

At June 30, 2010, the Corporation had outstanding borrowings of $25,000,000 under its $100,000,000 AR Credit Facility. Borrowings under the AR Credit Facility are limited based on the balance of the Corporation’s accounts receivable.

Page 10 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

5. Long-Term Debt (continued)

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

The Corporation unwound two forward starting interest rate swap agreements with a total notional amount of $150,000,000 (the “Swap Agreements”) in April 2008. The Corporation made a cash payment of $11,139,000, which represented the fair value of the Swap Agreements on the date of termination. The accumulated other comprehensive loss, net of tax, at the date of termination is being recognized in earnings over the life of the 6.6% Senior Notes. For the three and six months ended June 30, 2010, the Corporation recognized $223,000 and $441,000, respectively, as additional interest expense. For the three and six months ended June 30, 2009, the Corporation recognized $208,000 and $411,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the Swap Agreements will increase annual interest expense by approximately $1,000,000 until the maturity of the 6.6% Senior Notes in 2018. The accumulated other comprehensive loss related to the Swap Agreements was $5,621,000, net of cumulative noncurrent deferred tax assets of $3,677,000, at June 30, 2010; $5,887,000, net of cumulative noncurrent deferred tax assets of $3,852,000, at December 31, 2009; and $6,145,000, net of cumulative noncurrent deferred tax assets of $4,020,000, at June 30, 2009.

6. Financial Instruments

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

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

Page 11 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

6. 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, Georgia, Iowa and Louisiana which accounted for approximately 56% of the Aggregate business’ 2009 net sales). The estimated fair values of customer receivables approximate their carrying amounts.

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

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

The estimated fair value of the Corporation’s publicly registered long-term notes and debentures at June 30, 2010 was $962,610,000, compared with a carrying amount of $912,555,000 on the consolidated balance sheet. The fair value of this long-term debt was estimated based on quoted market prices. The estimated fair value of other borrowings, including the Corporation’s Term Loan and AR Credit Facility, was $143,530,000 at June 30, 2010 and approximates its carrying amount.

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

	June 30, 2010				December 31, 2009				June 30, 2009
	Carrying				Carrying				Carrying
	Value		Fair Value		Value		Fair Value		Value		Fair Value
Cash and cash equivalents	$	32,095	$	32,095	$	263,591	$	263,591	$	133,380	$	133,380
Accounts receivable, net	$	257,761	$	257,761	$	162,815	$	162,815	$	250,340	$	250,340
Notes receivable, net	$	12,594	$	12,594	$	13,415	$	13,415	$	12,107	$	12,107
Bank overdraft	$	3,403	$	3,403	$	1,737	$	1,737	$	1,692	$	1,692
Long-term debt	$	1,056,085	$	1,106,140	$	1,249,611	$	1,245,068	$	1,281,958	$	1,159,261

Page 12 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

7. Income Taxes

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

	Six Months Ended June 30,
	2010			2009
Estimated effective income tax rate:
Continuing operations		29.5	%		28.4	%
Discontinued operations		28.0	%		30.2	%
Consolidated Overall		29.4	%		28.4	%

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

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

The change in the year-to-date consolidated overall estimated effective income tax rate during the second quarter of 2010, when compared with the year-to-date consolidated overall estimated effective tax rate as of March 31, 2010, decreased consolidated net earnings for the six months ended June 30, 2010 by $5,436,000, or $0.12 per diluted share.

The change in the year-to-date consolidated overall estimated effective income tax rate during the second quarter of 2009, when compared with the year-to-date consolidated overall estimated effective tax rate as of March 31, 2009, decreased consolidated net earnings for the six months ended June 30, 2009 by $1,482,000, or $0.03 per diluted share.

Page 13 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

7. Income Taxes (continued)

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

Unrecognized tax benefits at beginning of period	$	16,722
Gross increases — tax positions in prior years		18,128
Gross decreases — tax positions in prior years		(1,910	)
Gross increases — tax positions in current year		781
Unrecognized tax benefits at end of period	$	33,721

At June 30, 2010, unrecognized tax benefits of $10,167,000, net of federal tax benefits and related to interest accruals and permanent income tax differences, would have favorably affected the Corporation’s effective tax rate if recognized.

In July 2010, the Corporation effectively settled issues related to the 2004 and 2005 tax years and also settled the Internal Revenue Service audit for the 2007 tax year. These settlements increased unrecognized tax benefits by $680,000. The Corporation anticipates that it is reasonably possible that $10,762,000 of unrecognized tax benefits may change during the twelve months ending June 30, 2011 due to the expiration of the statute of limitations for federal examination of the 2006 tax year.

Page 14 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

8. Pension and Postretirement Benefits

The following presents the estimated components of the recorded net periodic benefit cost for pension and postretirement benefits (dollars in thousands):

	Three Months Ended June 30,
	Pension						Postretirement Benefits
	2010			2009			2010			2009
Service cost	$	2,557		$	2,537		$	119		$	151
Interest cost		5,327			5,065			599			790
Expected return on assets		(4,867	)		(3,694	)		—			—
Amortization of:
Prior service cost (credit)		135			149			(324	)		(403	)
Actuarial loss		2,365			3,271			—			—
Settlement adjustment		(16	)		—			—			—
Total net periodic benefit cost	$	5,501		$	7,328		$	394		$	538

	Six Months Ended June 30,
	Pension						Postretirement Benefits
	2010			2009			2010			2009
Service cost	$	5,522		$	5,576		$	274		$	279
Interest cost		11,506			11,133			1,375			1,459
Expected return on assets		(10,511	)		(8,121	)		—			—
Amortization of:
Prior service cost (credit)		291			327			(744	)		(744	)
Actuarial loss		5,108			7,191			—			—
Settlement charge		83			—			—			—
Total net periodic benefit cost	$	11,999		$	16,106		$	905		$	994

9. Contingencies

The Corporation is engaged in certain legal and administrative proceedings incidental to its normal business activities. During the three months ended June 30, 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for approximately $7,000,000. In connection with the settlement, the Corporation reversed the excess of the established legal reserve, thereby increasing net earnings by $2,751,000, or $0.06 per diluted share.

In the opinion of management and counsel, it is unlikely that the outcome of any other 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 results of the Corporation’s operations, its cash flows or its financial position.

Page 15 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

10. Business Segments

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

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

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
	(Dollars in Thousands)
Total revenues:
Mideast Group	$	141,696		$	132,179		$	231,038		$	218,732
Southeast Group		113,571			111,136			197,538			225,357
West Group		196,628			184,941			318,436			321,957
Total Aggregates Business		451,895			428,256			747,012			766,046
Specialty Products		52,735			37,129			98,562			73,899
Total	$	504,630		$	465,385		$	845,574		$	839,945
Net sales:
Mideast Group	$	131,573		$	124,536		$	214,918		$	206,377
Southeast Group		92,104			92,144			160,224			187,454
West Group		171,218			160,766			273,588			280,301
Total Aggregates Business		394,895			377,446			648,730			674,132
Specialty Products		47,889			33,243			89,615			66,398
Total	$	442,784		$	410,689		$	738,345		$	740,530
Earnings (Loss) from operations:
Mideast Group	$	39,461		$	33,974		$	41,555		$	39,180
Southeast Group		7,541			10,009			(1,558	)		18,165
West Group		32,974			29,580			20,713			29,623
Total Aggregates Business		79,976			73,563			60,710			86,968
Specialty Products		16,812			7,819			28,024			14,162
Corporate		(6,140	)		(8,437	)		(10,951	)		(17,237	)
Total	$	90,648		$	72,945		$	77,783		$	83,893

Page 16 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

10. Business Segments (continued)

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

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2010		2009		2010		2009
	(Dollars in Thousands)
Aggregates	$	371,846	$	351,429	$	609,484	$	627,314
Asphalt		10,531		13,766		19,181		22,946
Ready Mixed Concrete		6,877		7,030		12,502		15,107
Road Paving		4,368		3,721		6,026		6,202
Other		1,273		1,500		1,537		2,563
Total Aggregates Business		394,895		377,446		648,730		674,132
Magnesia-Based Chemicals		33,221		23,133		59,997		47,519
Dolomitic Lime		14,230		9,634		28,928		18,157
Other		438		476		690		722
Specialty Products		47,889		33,243		89,615		66,398
Total	$	442,784	$	410,689	$	738,345	$	740,530

11. Supplemental Cash Flow Information

The following table presents the components of the change in other assets and liabilities, net:

	Six Months Ended
	June 30,
	2010			2009
	(Dollars in Thousands)
Other current and noncurrent assets	$	(19	)	$	(5,655	)
Accrued salaries, benefits and payroll taxes		(742	)		(6,211	)
Accrued insurance and other taxes		4,528			7,079
Accrued income taxes		15,326			15,713
Accrued pension, postretirement and postemployment benefits		2,836			10,378
Other current and noncurrent liabilities		(8,815	)		(3,448	)
	$	13,114		$	17,856

Page 17 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Continued)

12. Subsequent Event

On July 14, 2010, the Corporation entered into agreements with Fifth Third Bank (“Fifth Third”) to guarantee the repayment of amounts borrowed by an affiliate under a $20,000,000 revolving line of credit provided by Fifth Third and with Bank of America, N.A., to guarantee $12,400,000 of payment obligations of its affiliate under equipment lease agreements. The affiliate has agreed to reimburse and indemnify the Corporation for any payments and expenses the Corporation may incur from these guarantee agreements. The Corporation holds a subordinate lien of the affiliate’s assets as collateral for potential payments under the guarantee agreements.

Page 18 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010

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

OVERVIEW Martin Marietta Materials, Inc. (the “Corporation”), conducts its operations through four reportable business segments: Mideast Group, Southeast Group, West Group (collectively, the “Aggregates business”) and Specialty Products. The Corporation’s annual net sales and earnings are predominately derived from its Aggregates business, which processes and sells granite, limestone, and other aggregates products from a network of 286 quarries, distribution facilities and plants to customers in 31 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 commercial and residential building development. The Specialty Products segment produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

CRITICAL ACCOUNTING POLICIES The Corporation outlined its critical accounting policies in its Annual Report on Form 10-K for the year ended December 31, 2009, filed with the Securities and Exchange Commission on February 26, 2010. There were no changes to the Corporation’s critical accounting policies during the six months ended June 30, 2010.

RESULTS OF OPERATIONS

Except as indicated, the following comparative analysis in the Results of Operations section of 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. The Corporation’s heritage aggregates product line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and divestitures.

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. 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). The following tables present the calculations of gross margin and operating margin for the three and six months ended June 30, 2010 and 2009 in accordance with GAAP and reconciliations of the ratios as percentages of total revenues to percentages of net sales (dollars in thousands):

Page 19 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Gross Margin in Accordance with GAAP

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
Gross profit	$	117,698		$	111,717		$	137,311		$	160,252
Total revenues	$	504,630		$	465,385		$	845,574		$	839,945
Gross margin		23.3	%		24.0	%		16.2	%		19.1	%

Gross Margin Excluding Freight and Delivery Revenues

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
Gross profit	$	117,698		$	111,717		$	137,311		$	160,252
Total revenues	$	504,630		$	465,385		$	845,574		$	839,945
Less: Freight and delivery revenues		(61,846	)		(54,696	)		(107,229	)		(99,415	)
Net sales	$	442,784		$	410,689		$	738,345		$	740,530
Gross margin excluding freight and delivery revenues		26.6	%		27.2	%		18.6	%		21.6	%

Operating Margin in Accordance with GAAP

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
Earnings from operations	$	90,648		$	72,945		$	77,783		$	83,893
Total revenues	$	504,630		$	465,385		$	845,574		$	839,945
Operating margin		18.0	%		15.7	%		9.2	%		10.0	%

Page 20 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Operating Margin Excluding Freight and Delivery Revenues

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2010			2009			2010			2009
Earnings from operations	$	90,648		$	72,945		$	77,783		$	83,893
Total revenues	$	504,630		$	465,385		$	845,574		$	839,945
Less: Freight and delivery revenues		(61,846	)		(54,696	)		(107,229	)		(99,415	)
Net sales	$	442,784		$	410,689		$	738,345		$	740,530
Operating margin excluding freight and delivery revenues		20.5	%		17.8	%		10.5	%		11.3	%

The presentation of incremental operating margin (excluding freight and delivery revenues) for the Mideast Group is also a non-GAAP financial measure. Management presents this measure, as it believes it demonstrates the impact of incremental sales on operating margin (excluding freight and delivery revenues) due to the significant amount of fixed production costs. The following presents the calculation of the incremental operating margin (excluding freight and delivery revenues) for the Mideast Group for the quarter ended June 30, 2010 (dollars in thousands):

Mideast Group earnings from operations for the quarter ended June 30, 2010	$	39,461
Mideast Group earnings from operations for the quarter ended June 30, 2009		33,974
Incremental earnings from operations for the Mideast Group for the quarter ended June 30, 2010	$	5,487
Mideast Group net sales for the quarter ended June 30, 2010	$	131,573
Mideast Group net sales for the quarter ended June 30, 2009		124,536
Incremental net sales for the Mideast Group for the quarter ended June 30, 2010	$	7,037
Incremental operating margin (excluding freight and delivery revenues) for Mideast Group for the quarter ended June 30, 2010		78	%

Page 21 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Quarter Ended June 30

Notable items for the quarter ended June 30, 2010 included:

• Earnings per diluted share of $1.18 compared with $0.86 for the prior-year quarter

• Net sales of $442.8 million compared with $410.7 million for the 2009 second quarter

• Heritage aggregates product line volume up 8.6% for the quarter

• Heritage aggregates product line pricing down 3.8%, or $0.40 per ton

• Record Specialty Products operating margin (excluding freight and delivery revenues) of 35.1%, up 1,160 basis points

• Selling, general and administrative expenses down $3.2 million and 140 basis points as a percentage of net sales compared with prior-year quarter

• Consolidated operating margin (excluding freight and delivery revenues) of 20.5%, up 270 basis points over the prior-year quarter

The following table presents net sales, gross profit, 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, 2010 and 2009. 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.

Earnings from operations include research and development expense and other operating income and expenses, net. Research and development expense for the Corporation was $0.2 million for the quarter ended June 30, 2009. Consolidated other operating income and expenses, net, was income of $6.5 million and expense of $1.8 million for the quarters ended June 30, 2010 and 2009, respectively.

Page 22 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

	Three Months Ended June 30,
	2010					2009
				% of					% of
	Amount			Net Sales		Amount			Net Sales
				(Dollars in Thousands)
Net sales:
Mideast Group	$	131,573				$	124,536
Southeast Group		92,104					92,144
West Group		171,218					160,766
Total Aggregates Business		394,895			100.0		377,446			100.0
Specialty Products		47,889			100.0		33,243			100.0
Total	$	442,784			100.0	$	410,689			100.0
Gross profit (loss):
Mideast Group	$	47,608				$	44,982
Southeast Group		14,197					17,188
West Group		37,450					38,320
Total Aggregates Business		99,255			25.1		100,490			26.6
Specialty Products		19,556			40.8		10,286			30.9
Corporate		(1,113	)		—		941			—
Total	$	117,698			26.6	$	111,717			27.2
Selling, general & administrative expenses:
Mideast Group	$	10,373				$	11,127
Southeast Group		6,324					6,665
West Group		10,510					10,457
Total Aggregates Business		27,207			6.9		28,249			7.5
Specialty Products		2,688			5.6		2,332			7.0
Corporate		3,664			—		6,185			—
Total	$	33,559			7.6	$	36,766			9.0
Earnings (Loss) from operations:
Mideast Group	$	39,461				$	33,974
Southeast Group		7,541					10,009
West Group		32,974					29,580
Total Aggregates Business		79,976			20.3		73,563			19.5
Specialty Products		16,812			35.1		7,819			23.5
Corporate		(6,140	)		—		(8,437	)		—
Total	$	90,648			20.5	$	72,945			17.8

Page 23 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

The Corporation showed significant improvement despite the continuing challenging economic environment. Of particular note is the performance of the Corporation’s heritage aggregates volume which increased 8.6%, making this the first quarter in four years with growth in heritage aggregates shipments. Overall, however, the most encouraging sign is that this volume growth was widespread — across each of the Corporation’s end-use markets and geographic segments.

As an end use, infrastructure continues to represent over 55% of the Corporation’s Aggregates business and, as such, played a significant role in the Corporation’s second quarter results. During the second quarter of 2010, the Aggregates business experienced an 11% increase in aggregates volume in the infrastructure market over the comparable second quarter of 2009. As expected, many of the Corporation’s key states began spending funds from the American Recovery and Reinvestment Act (“ARRA” or “Stimulus”) in earnest during the quarter and aggregates volumes consumed on Stimulus projects increased 200% compared with the prior-year quarter. Even more notably, the infrastructure end use market, excluding shipments to Stimulus-funded projects, had volume growth of 6% due to state spending on delayed road maintenance projects. Further, volume growth of 10% in the Corporation’s nonresidential end-use market was driven by an increase in oilfield activity, as aggregates are essential to build oilfield roads and drilling pads. The nonresidential construction market, excluding shipments to the oilfield industry, had volume growth of 3.5%, partially as a result of contractors and project owners taking advantage of historically low construction prices. Residential and ChemRock/Rail had volume increases of 8% and 6%, respectively.

The Mideast Group and West Group each generated double-digit volume increases — nearly 11% and 10%, respectively, in heritage aggregates product line shipments. Growth in the Mideast Group was fueled by Stimulus-funded jobs, as 40% of its increased volume was attributable to shipments to these projects. More specifically, the Corporation’s Indiana markets benefited significantly from this volume growth, reporting a 45% increase in heritage aggregates shipments for the second quarter 2010. The West Group benefited from both Stimulus-funded projects and the increased shipments to the oilfield industry.

Overall heritage aggregates product line pricing decreased 3.8% compared with the prior-year quarter. Consistent with recent trends, pricing varied significantly by market and ranged from an increase of 12% to a decrease of 14%. Competitive forces remain a challenge, particularly in markets that enjoyed strong residential and nonresidential construction activity during the previous economic cycle. These markets now often have an over-supply of contractors who have tended to bid aggressively on Stimulus-related projects, thereby reducing the competitiveness of the Corporation’s long-term customers. Management expects this pressure will ease as residential and nonresidential construction markets continue to either recover or reach levels of sustained stability. In addition to the competitive pressures, geographic mix is also an important factor relative to overall aggregates pricing. The Corporation’s top markets, in terms of volume recovery, for the second quarter 2010 — Indiana, Arkansas and North Texas — each have average selling prices less than the overall average for the Aggregates business.

Page 24 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Still, the incremental operating margin achieved in these markets underscores management’s view that volume recovery, combined with the Corporation’s lean operating cost structure, will lead to record incremental margins even as the Corporation experiences pricing pressures. For example, the Mideast Group reported an incremental operating margin of 78% for the second quarter of 2010, driven in large part by the volume recovery in the Indiana markets. Management expects this type of performance to repeat in multiple markets across the Corporation as volume rebounds.

The following tables present volume and pricing data and shipments data for the aggregates product line. Heritage aggregates operations exclude volume and pricing data for acquisitions that were not included in prior-year operations for the comparable period and divestitures.

	Three Months Ended
	June 30, 2010
	Volume			Pricing
Volume/Pricing Variance (1)
Heritage Aggregates Product Line (2):
Mideast Group		10.7	%		(4.5	%)
Southeast Group		2.6	%		(2.2	%)
West Group		10.3	%		(3.8	%)
Heritage Aggregates Operations		8.6	%		(3.8	%)
Aggregates Product Line (3)		9.8	%		(3.7	%)

	Three Months Ended
	June 30,
	2010		2009
	(tons in thousands)
Shipments
Heritage Aggregates Product Line(2):
Mideast Group		11,637		10,511
Southeast Group		8,219		8,007
West Group		17,039		15,445
Heritage Aggregates Operations		36,895		33,963
Acquisitions		543		137
Divestitures (4)		7		12
Aggregates Product Line (3)		37,445		34,112

(1)	Volume/pricing variances reflect the percentage increase/(decrease) from the comparable period in the prior year.
(2)	Heritage Aggregates Product Line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and 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 25 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

The Aggregates business is significantly affected by seasonal changes and other weather-related conditions. Aggregates production and shipment levels coincide 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 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. Because of the potentially significant impact of weather on the Corporation’s operations, second-quarter results are not indicative of expected performance for other interim periods or the full year.

The Specialty Products business once again achieved record performance and contributed significantly to the Corporation’s second-quarter results. This business expanded its net sales by $14.6 million, or 44%, compared with the prior-year quarter and its operating margin (excluding freight and delivery revenues) by 1,160 basis points to 35.1% for the quarter. Specialty Products had volume growth in all major product lines and continued its focus on cost control programs. Earnings from operations of $16.8 million increased $9.0 million when compared with the prior-year quarter and surpassed the record for earnings from operations established in the first quarter of 2010.

The Corporation’s strong results continue to reflect its ability to control operating costs and the Corporation’s operating team also remains focused on safety, productivity and customer service. Direct production costs in the Aggregates business increased $14.6 million, or 6.6%, driven in large part by $5.8 million of increased energy costs.

The Corporation’s gross margin excluding freight and delivery revenues for the three months ended June 30 decreased 60 basis points to 26.6% in 2010.

The following presents a rollforward of the Corporation’s gross profit (dollars in thousands):

Consolidated gross profit, quarter ended June 30, 2009	$	111,717
Aggregates Business:
Volume strength		32,797
Pricing weakness		(15,348	)
Cost increases, net		(18,684	)
Decrease in Aggregates Business gross profit		(1,235	)
Specialty Products		9,270
Corporate		(2,054	)
Increase in consolidated gross profit		5,981
Consolidated gross profit, quarter ended June 30, 2010	$	117,698

Page 26 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Selling, general and administrative expenses declined $3.2 million for the quarter compared with the 2009 second quarter due to lower personnel costs related to stock-based compensation. The Corporation’s objective is to hold selling, general and administrative expenses flat with 2009, excluding required payments under certain retirement plans which will occur in the second half of the year.

Among other items, other operating income and expenses, net, includes gains and losses on the sale of assets; gains and losses related to accounts receivable; rental, royalty and services income; and the accretion and depreciation expenses related to asset retirement obligations. For the second quarter, consolidated other operating income and expenses, net, was income of $6.5 million in 2010 compared with an expense of $1.8 million in 2009. During the second quarter of 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for less than its established legal reserve, thereby increasing other operating income for the West Group by $5.0 million. Second quarter 2009 included $1.7 million of transaction costs and a $1.2 million property loss.

Interest expense was $16.8 million for the second quarter 2010 as compared with $18.7 million for the prior-year quarter. The decrease primarily resulted from lower outstanding borrowings during the three months ended June 30, 2010 as compared with the prior-year quarter.

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 quarter ended June 30, was expense of $1.3 million in 2010 compared with income of $1.3 million in 2009, primarily as a result of lower earnings from nonconsolidated equity investments and a loss on foreign currency transactions in 2010.

Six Months Ended June 30

Notable items for the six months ended June 30, 2010 included:

• Net sales of $738.3 million, down 0.3% compared with prior-year period

• Heritage aggregates product line volume down 0.3% and pricing down 3.6% compared with the prior-year period

• Selling, general and administrative expenses down $6.8 million compared with the prior-year period

• Consolidated operating margin (excluding freight and delivery revenues) of 10.5% compared with 11.3% for the prior-year period

• Earnings per diluted share of $0.65, compared with $0.75 for the prior-year period

Page 27 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

The following table presents net sales, gross profit, selling, general and administrative expenses and earnings (loss) from operations data for the Corporation and its reportable segments for the six months ended June 30, 2010 and 2009. 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.

Earnings from operations include research and development expense and other operating income and expenses, net. Research and development expense for the Corporation was $0.3 million for the six months ended June 30, 2009. Consolidated other operating income and expenses, net, was income of $7.6 million and expense of $2.1 million for the six months ended June 30, 2010 and 2009, respectively.

	Six Months Ended June 30,
	2010					2009
				% of					% of
	Amount			Net Sales		Amount			Net Sales
				(Dollars in Thousands)
Net sales:
Mideast Group	$	214,918				$	206,377
Southeast Group		160,224					187,454
West Group		273,588					280,301
Total Aggregates Business		648,730			100.0		674,132			100.0
Specialty Products		89,615			100.0		66,398			100.0
Total	$	738,345			100.0	$	740,530			100.0
Gross profit (loss):
Mideast Group	$	59,480				$	61,002
Southeast Group		11,312					32,057
West Group		34,508					49,059
Total Aggregates Business		105,300			16.2		142,118			21.1
Specialty Products		33,629			37.5		18,960			28.6
Corporate		(1,618	)		—		(826	)		—
Total	$	137,311			18.6	$	160,252			21.6
Selling, general & administrative expenses:
Mideast Group	$	20,819				$	22,269
Southeast Group		12,738					13,186
West Group		21,175					21,150
Total Aggregates Business		54,732			8.4		56,605			8.4
Specialty Products		5,620			6.3		4,686			7.1
Corporate		6,778			—		12,632			—
Total	$	67,130			9.1	$	73,923			10.0

Page 28 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

	Six Months Ended June 30,
	2010					2009
				% of					% of
	Amount			Net Sales		Amount			Net Sales
				(Dollars in Thousands)
Earnings (Loss) from operations:
Mideast Group	$	41,555				$	39,180
Southeast Group		(1,558	)				18,165
West Group		20,713					29,623
Total Aggregates Business		60,710			9.4		86,968			12.9
Specialty Products		28,024			31.3		14,162			21.3
Corporate		(10,951	)		—		(17,237	)		—
Total	$	77,783			10.5	$	83,893			11.3

Net sales for the Aggregates business for the six months ended June 30 were $648.7 million in 2010, a 3.8% decline versus 2009 net sales of $674.1 million. Aggregates volume at heritage locations decreased 0.3%, while pricing was down 3.6%. Inclusive of acquisitions and divestitures, aggregates product line volume increased 0.7% and pricing decreased 3.6% for the six months ended June 30, 2010. Competitive pressure and geographic mix continue to negatively affect aggregates product line pricing.

The following tables present volume and pricing data and shipments data for the aggregates product line. Heritage aggregates operations exclude volume and pricing data for acquisitions that were not included in prior-year operations for the comparable period and divestitures.

	Six Months Ended
	June 30, 2010
	Volume			Pricing
Volume/Pricing Variance(1)
Heritage Aggregates Product Line (2):
Mideast Group		7.8	%		(3.4	%)
Southeast Group		(10.2	%)		(4.4	%)
West Group		0.3	%		(3.3	%)
Heritage Aggregates Operations		(0.3	%)		(3.6	%)
Aggregates Product Line (3)		0.7	%		(3.6	%)

Page 29 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

	Six Months Ended
	June 30,
	2010		2009
	(tons in thousands)
Shipments
Heritage Aggregates Product Line (2):
Mideast Group		18,542		17,193
Southeast Group		14,341		15,968
West Group		27,259		27,189
Heritage Aggregates Operations		60,142		60,350
Acquisitions		769		137
Divestitures (4)		11		25
Aggregates Product Line (3)		60,922		60,512

(1)	Volume/pricing variances reflect the percentage increase/(decrease) from the comparable period in the prior year.
(2)	Heritage Aggregates Product Line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and 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.

Specialty Products’ net sales were $89.6 million for the first six months of 2010 compared with $66.4 million for the prior-year period. The increase in net sales is due to volume growth in all major product lines. Earnings from operations for the six months ended June 30, 2010 were $28.0 million compared with $14.2 million for the prior-year period.

The Corporation’s gross margin excluding freight and delivery revenues for the six months ended June 30 decreased 300 basis points to 18.6% in 2010. The following presents a rollforward of the Corporation’s gross profit (dollars in thousands):

Consolidated gross profit, six months ended June 30, 2009	$	160,252
Aggregates Business:
Volume strength		151
Pricing weakness		(25,553	)
Cost increases, net		(11,416	)
Decrease in Aggregates Business gross profit		(36,818	)
Specialty Products		14,669
Corporate		(792	)
Decrease in consolidated gross profit		(22,941	)
Consolidated gross profit, six months ended June 30, 2010	$	137,311

Page 30 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Selling, general and administrative expenses declined $6.8 million during the six months ended June 30, 2010 due to lower personnel costs. The Corporation’s objective is to hold selling, general and administrative expenses flat with 2009, excluding required payments under certain retirement plans.

For the six months ended June 30, consolidated other operating income and expenses, net, was income of $7.6 million in 2010 compared with an expense of $2.1 million in 2009. In addition to higher gains on asset sales, during 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for less than its established legal reserve, thereby increasing other operating income for the West Group by $5.0 million. The results for the six months ended June 30, 2009 included $1.8 million of transaction costs and a $1.2 million property loss.

Consolidated interest expense was $34.4 million for the six months ended June 30, 2010 as compared with $37.2 million for the prior-year period. The decrease primarily resulted from lower outstanding borrowings during 2010.

The change in the year-to-date consolidated overall estimated effective income tax rate during the second quarter of 2010, when compared with the year-to-date consolidated overall estimated effective tax rate as of March 31, 2010, decreased consolidated net earnings for the six months ended June 30, 2010 by $5.4 million, or $0.12 per diluted share. In addition, the 2010 overall effective tax rate includes the reduction of tax benefits for the Medicare Part D subsidy resulting from the enactment of the Patient Protection and Affordable Care Act (PPACA). Management expects the overall effective tax rate for the full year, inclusive of the effects of PPACA, to be approximately 28%.

LIQUIDITY AND CAPITAL RESOURCES Net cash provided by operating activities during the six months ended June 30, 2010 was $86.3 million compared with $116.7 million in the comparable period of 2009. Operating cash flow is primarily from consolidated net earnings, before deducting depreciation, depletion and amortization, offset by working capital requirements. Net cash provided by operating activities for the first six months of 2010 as compared with the year-earlier period reflects a $94.9 million build in accounts receivable for the six months ended June 30, 2010 resulting from increased sales occurring in the second quarter of the current year. Management expects this trend to continue through the balance of the year. Cash used in the build of accounts receivable was partially offset by $12.9 million generated by the Corporation’s inventory management initiatives through the first six months of 2010.

Page 31 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Depreciation, depletion and amortization were as follows:

	Six Months Ended
	June 30,
	2010		2009
	(Dollars in Thousands)
Depreciation	$	86,903	$	84,091
Depletion		2,012		1,741
Amortization		1,585		1,543
	$	90,500	$	87,375

During the third and fourth quarters of 2010, the Corporation will make required cash payments under certain retirement plans of $4.0 million and $11.2 million, respectively.

The seasonal nature of the construction aggregates business impacts quarterly operating cash flow when compared with the year. Full year 2009 net cash provided by operating activities was $318.4 million, compared with $116.7 million for the first six months of 2009.

Capital expenditures, exclusive of acquisitions, for the first six months were $68.6 million in 2010 and $74.8 million in 2009. Full-year capital spending for 2010 is expected to be approximately $135 million, including the Hunt Martin Materials joint venture but exclusive of acquisitions, a $25 million reduction from management’s previous guidance. Comparable full-year capital expenditures were $139.2 million in 2009.

During the six months ended June 30, 2010, the Corporation spent $28.1 million on acquisitions, primarily on the acquisition of a deep-water port operation located at Port Canaveral in Florida. This facility is currently the only developed deep-water aggregates import terminal located on the central east coast of Florida. From this location, the Corporation can ship product into the greater Orlando area, the second-largest aggregates consuming area in Florida. This acquisition complements the Corporation’s existing long-haul rail network.

At June 30, 2010, the Corporation had outstanding borrowings of $25.0 million under its $100 million secured accounts receivable credit facility (the “AR Credit Facility”). Borrowings under the AR Credit Facility are limited based on the balance of the Corporation’s accounts receivable.

In April 2010, the Corporation repaid $217.6 million of Floating Rate Senior Notes through the use of cash and short-term borrowings.

At June 30, 2010, the Corporation had $244.1 million of current maturities of long-term debt as $242.1 million of 6.875% Notes were reclassified to current to reflect their maturity date of April 2011. Management believes it has the ability to refinance the Notes when they become due.

Page 32 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

The Corporation can repurchase its common stock through open-market purchases pursuant to authority granted by its Board of Directors. The Corporation did not repurchase any shares of common stock during the six months ended June 30, 2010 or 2009. Management currently has no intent to repurchase any shares of its common stock. At June 30, 2010, 5,042,000 shares of common stock were remaining under the Corporation’s repurchase authorization.

The Corporation’s $325 million five-year revolving credit agreement (the “Credit Agreement”), $130 million unsecured term loan (the “Term Loan”) and $100 million AR Credit Facility are subject to a leverage ratio covenant. The covenant requires the Corporation’s ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve months (the “Ratio”) to not exceed 3.50 to 1.00 as of the end of any fiscal quarter. Furthermore, the covenant allows the Corporation to exclude debt incurred in connection with acquisitions from the Ratio for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed the maximum Ratio plus 0.25. The Ratio is calculated as total long-term debt 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 items and noncash items, if they occur, can affect the calculation of consolidated EBITDA. At June 30, 2010, the Corporation’s ratio of consolidated debt to consolidated EBITDA, as defined, for the trailing twelve months EBITDA was 2.84 times and was calculated as follows (dollars in thousands):

	Twelve Month Period
	July 1, 2009 to
	June 30, 2010
Earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	82,605
Add back:
Interest expense		70,720
Income tax expense		26,486
Depreciation, depletion and amortization expense		177,177
Stock-based compensation expense		15,956
Deduct:
Interest income		(1,361	)
Consolidated EBITDA, as defined	$	371,583
Consolidated debt at June 30, 2010	$	1,056,085
Consolidated debt to consolidated EBITDA, as defined, at June 30, 2010 for the trailing twelve months EBITDA		2.84	x

Page 33 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

In the event of a default on the leverage ratio, the lenders can terminate the Credit Agreement, Term Loan and AR Credit Facility and declare any outstanding balances 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, are 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, 2010, the Corporation had $323 million of unused borrowing capacity under its Credit Agreement and $75 million of available borrowings on its AR Credit Facility, subject to complying with the related leverage covenant. Of the $398 million of unused borrowing capacity, $199 million, or 50%, has been committed from Wells Fargo Bank, N.A. and Wachovia Bank, N.A. under commitments entered into prior to Wells Fargo Bank, N.A.’s acquisition of Wachovia Bank, N.A. Management does not expect any material change in this commitment prior to the expiration of the facilities. The Credit Agreement expires on June 30, 2012 and the AR Credit Facility terminates on April 20, 2012.

The Corporation may be required to obtain financing in order to fund certain strategic acquisitions, if any such opportunities arise, or to refinance outstanding debt. Any strategic acquisition of size would require an appropriate balance of newly-issued equity with debt in order to maintain an investment-grade credit rating. Borrowings under the AR Credit Facility would be limited based on the balance of the Corporation’s accounts receivable. Furthermore, the Corporation is exposed to the credit markets, through the interest cost related to its AR Credit Facility and Term Loan and the interest cost related to its commercial paper program, to the extent that it is available to the Corporation. Currently, the Corporation’s senior unsecured debt is rated BBB+ by Standard & Poor’s and Baa3 by Moody’s. The Corporation’s commercial paper obligations are rated A-2 by Standard & Poor’s and P-3 by Moody’s. While management believes its credit ratings will remain at an investment-grade level, no assurance can be given that these ratings will remain at those levels.

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, 2009, filed with the Securities and Exchange Commission on February 26, 2010. Management continues to evaluate its exposure to all operating risks on an ongoing basis.

Page 34 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

OUTLOOK Management’s outlook for the Corporation in 2010 has improved based on improving stability and expected growth in overall aggregates demand through the remainder of the year. Evidence of that stability was reflected in the Aggregates business’ second-quarter aggregates shipments. Management expects volumes sold to the infrastructure construction market to continue to increase as recipients of ARRA funds initiate projects to which monies have been obligated. For the full year, management expects: (i) infrastructure construction volume to be up 8% to 12%; (ii) nonresidential construction volume to decline 12% to 15%, improved from management’s earlier forecast; (iii) residential construction volume to be up 12% to 15%; and (iv) growth of 10% for the Corporation’s ChemRock/Rail products.

Considering all these factors, the Corporation is revising its full-year volume guidance upward. Management expects aggregates volume growth of 4% to 6%, aggregates pricing to range from down 1% to down 3% and aggregates production cost per ton to remain flat in 2010 compared with the prior year. This combination should lead to increased aggregates sales and improved gross margin and profitability in 2010. Energy costs, primarily diesel fuel consumed by off-road mobile quarry equipment, are likely to increase slightly compared with 2009. Management expects the Specialty Products segment to contribute $46 million to $48 million in pretax earnings for 2010. Interest expense should be approximately $70 million in 2010. Consistent with results for the first six months of 2010, management expects an increased use of cash for working capital, most notably accounts receivable, as revenues grow.

Although it is too early to issue guidance for 2011, management has begun to frame its initial view. Stability in federal funding for infrastructure is a critical issue moving into 2011 and the Corporation is operating under a Congressional continuing resolution that extended the Safe, Accountable, Flexible and Efficient Transportation Equity Act — A Legacy for Users (SAFETEA-LU) through December 31, 2010. Early in 2010, management was hopeful that a significantly increased Highway Bill would be passed by the lame-duck Congress after elections in November. Such a process had historic precedent in both the 1980s and 1990s when the existing Highway Bills were reauthorized, each at notably higher funding levels which were financed by increased user fees. However, a recent report issued by the Congressional Budget Office (the “CBO Report”) stated that the existing Highway Trust Fund could maintain the current level of spending for two years. Thus, management now believes the CBO Report will serve to make reauthorization a less pressing issue for politicians already reluctant to increase spending. Accordingly, management believes working under some form of a Congressional continuing resolution of SAFETEA-LU for 2011 is likely. Management still expects to see approximately 30% in ARRA infrastructure funds spent in 2011 together with an extended federal highway bill that will keep spending at constant funding levels. The Corporation also expects to see improvement in the residential construction market and it expects nonresidential construction to trough in 2010, with modest 2011 volume recovery.

Page 35 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

The 2010 estimated outlook includes management’s assessment of the likelihood of certain risk factors that will affect performance. The most significant risk to 2010 performance will be, as previously noted, the strength of the United States economy and its impact on construction activity. The Corporation’s 2010 outlook is based on the expectation that the United States economy will continue to stabilize and positive economic growth will commence in the second half of the year.

Risks to the Corporation’s future performance are related to both price and volume and include a more widespread decline in aggregates pricing, a decline in infrastructure construction as a result of unexpected delays in federal ARRA and state infrastructure projects and continued lack of clarity regarding the timing and amount of the federal highway bill, a continued decline in commercial construction, a decline in residential construction, or some combination thereof. Further, increased highway construction funding pressures as a result of either federal or state issues can affect profitability. Currently, nearly all states are experiencing state-level funding pressures driven by lower tax revenues and an inability to finance approved projects. North Carolina and Texas are among the states experiencing these pressures, and these states disproportionately affect revenue and profitability.

The Corporation’s principal business serves customers in construction aggregates-related markets. This concentration could increase the risk of potential losses on customer receivables; however, payment bonds normally posted by the Corporation’s customers 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 prices, both directly and indirectly. Diesel and other fuels change production costs directly through consumption or indirectly in the increased cost of energy-related consumables, among them, steel, explosives, tires and conveyor belts. Fluctuating diesel pricing also affects transportation costs, primarily through fuel surcharges in the Corporation’s long-haul distribution network. The Corporation’s estimated outlook does not include rapidly increasing diesel costs during the remainder of 2010.

The availability of transportation in the Corporation’s long-haul network, particularly the availability of barges on the Mississippi River system and the availability 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 region. The Aggregates business is also subject to weather-related risks that can significantly affect production schedules and profitability. Hurricane activity in the Atlantic Ocean and Gulf Coast generally is most active during the third and fourth quarters.

Page 36 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Risks to the 2010 outlook include volume decline as a result of economic events outside of 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.

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 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 Quarterly Report 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 the Corporation’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,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” and other words of similar meaning in connection with future events or future operating or financial performance. Any or all of the Corporation’s forward-looking statements here and in other publications may turn out to be wrong.

Page 37 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(Continued)

Factors that the Corporation currently believes could cause actual results to differ materially from the forward-looking statements in this Quarterly Report on Form 10-Q include, but are not limited to, the performance of the United States economy; widespread decline in aggregates pricing; the level and timing of federal and state transportation funding, including federal stimulus projects and most particularly in North Carolina, one of the Corporation’s largest and most profitable states, and Georgia, Texas, Iowa and Louisiana, which when coupled with North Carolina, represented 56% of 2009 net sales of the Aggregates business; 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; the severity of a continued decline in the commercial construction market, notably office and retail space, and the continued decline in residential construction; 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 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; continued increases in the cost of other repair and supply parts; transportation availability, notably barge availability on the Mississippi River system and 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 costs and higher volumes of rail and water shipments; weakening in the steel industry markets served by the Corporation’s dolomitic lime products; inflation and its effect on both production and interest costs; changes in tax laws, the interpretation of such laws and/or administrative practices that would increase the Corporation’s tax rate; violation of the debt covenant if price and volume decline worse than expected; downward pressure on the Corporation’s common stock price and its impact on goodwill impairment evaluations; and other risk factors listed from time to time found in the Corporation’s filings with the Securities and Exchange Commission. 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.

Page 38 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
Second Quarter Ended June 30, 2010
(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, 2009, 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

Page 39 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

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 commercial and residential construction markets, could continue to decline if companies and consumers are unable to obtain financing for construction projects or if the economic recession causes delays or cancellations to capital projects. Additionally, declining tax revenues and state budget deficits have negatively affected states’ abilities to finance infrastructure construction projects.

Demand in the residential construction market is affected by interest rates. The Federal Reserve kept the federal funds rate at zero percent during 2009; the rate remains unchanged in 2010. The residential construction market accounted for approximately 7% of the Corporation’s aggregates product line shipments in 2009.

Aside from these inherent risks from within its operations, the Corporation’s earnings are affected also by changes in short-term interest rates as a result of any temporary cash investments, including money market funds and Eurodollar time deposit accounts; any outstanding variable-rate borrowing facilities; and defined benefit pension plans. Additionally, the Corporation’s earnings are affected by energy costs. The Corporation has no counterparty risk.

Variable-Rate Borrowing Facilities. The Corporation’s variable-rate borrowing facilities include a $325 million Credit Agreement which supports its commercial paper program, a $100 million AR Credit Facility and a $130 million Term Loan. Borrowings under these facilities and the commercial paper program bear interest at a variable interest rate. A hypothetical 100-basis-point increase in interest rates on outstanding borrowings of $136.8 million, which is the outstanding balance at June 30, 2010, would increase interest expense by $1.4 million on an annual basis. Wells Fargo Bank, N.A. and Wachovia Bank, N.A. have collective commitments of $200 million under the Corporation’s variable-rate borrowing facilities.

Pension Expense. The Corporation’s results of operations are affected by its pension expense. Assumptions that affect this expense include the discount rate and 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, 2009, filed with the Securities and Exchange Commission on February 26, 2010.

Page 40 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

Energy Costs. Energy costs, including diesel fuel, natural gas and liquid asphalt, represent significant production costs for the Corporation. Increases in the prices of these products generally are tied to energy sector inflation. In 2009, decreases in the prices of these products compared with 2008 positively affected earnings per diluted share by $0.50. A hypothetical 10% change in the Corporation’s energy costs in 2010 as compared with 2009, assuming constant volumes, would impact 2010 pretax earnings by approximately $13.1 million.

Aggregate Risk for Interest Rates and Energy Costs. Pension expense for 2010 was calculated based on assumptions selected at December 31, 2009. Therefore, interest rate risk in 2010 is limited to the potential effect related to the Corporation’s borrowings under variable-rate facilities. The effect of a hypothetical increase in interest rates of 1% on the $136.8 million of variable-rate borrowings outstanding at June 30, 2010 would be an increase of $1.4 million in interest expense in 2010. Additionally, a 10% change in energy costs would impact annual pretax earnings by $13.1 million.

Item 4. Controls and Procedures

As of June 30, 2010, 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, 2010. 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 41 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

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, 2009.

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, 2009.

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

ISSUER PURCHASES OF EQUITY SECURITIES

					Total Number of		Maximum Number of
					Shares Purchased as		Shares that May Yet
					Part of Publicly		be Purchased Under
	Total Number of		Average Price Paid		Announced Plans or		the Plans or
Period	Shares Purchased		per Share		Programs		Programs
April 1, 2010 — April 30, 2010		—	$	—		—		5,041,871
May 1, 2010 — May 31, 2010		—	$	—		—		5,041,871
June 1, 2010 — June 30, 2010		—	$	—		—		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.

Page 42 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

PART II-OTHER INFORMATION
(Continued)

Item 6. Exhibits.

Exhibit
No.	Document
31.01	Certification dated August 3, 2010 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 3, 2010 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 3, 2010 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 3, 2010 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
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 43 of 45

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 3, 2010	By:	/s/ Anne H. Lloyd
		Anne H. Lloyd
		Executive Vice President and Chief Financial Officer

Page 44 of 45

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES
FORM 10-Q
For the Quarter Ended June 30, 2010

EXHIBIT INDEX

Exhibit No.	Document
31.01	Certification dated August 3, 2010 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 3, 2010 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 3, 2010 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 3, 2010 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
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 45 of 45

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 3, 2010	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 3, 2010	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, 2010 (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 3, 2010

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, 2010 (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 3, 2010

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.