1. 1 Martin Marietta Materials

2. 2 At a Glance As of December 31, 2006: Stock listingNYSE: MLM IndustryLeading producer of construction aggregates and producer of magnesia-based chemicals and dolomitic lime Net sales$1.9 billion Diluted EPS$5.29 Shares outstanding44,851,000

3. 3 Changes in Aggregates Industry Fundamentals Industry consolidation Barriers to entry Scarcity of supply in the southern United States Limited transportation availability Limited distribution sites

4. 4 Our Strategy – Capture Value from Changing Fundamentals Loading barges at Three Rivers Quarry, Kentucky

5. 5 Strategy Assemble leading set of assets in high growth Southeast and Southwest areas Focus on long-haul transportation to build competitive advantage Focus on best practices and information systems to drive cost performance

6. 6 Aggregates Business Profile – 2006 Southeast Group 74% of 2006 Aggregates Business’ net sales from southern United States Mideast Group West Group

7. Scarcity of Aggregate Supply Limestone Hard Rock Information from the Department of Interior 7

8. 8 Population Movement Percentage of 2006 Aggregates business’ net sales Rank of percent change – population 2000 to 2030 (source: Census Bureau) Rank – #3 Rank - #4 Rank – #7 Rank – #8 TX 19% GA 8% NC 20% FL 5%

9. 9 Aggregates Supply U.S. consumption = 3.3B tons annually * Additional volume predominantly in southern U.S. Barriers to entry can limit new quarry openings Average quarry produces 1M tons annually 3% GDP growth 100M additional tons required annually * Per U.S. Geological Survey

10. 10 Transportation Mode 73% Truck 16% Rail 11% Water 93% Truck 7% Rail (71.2 million tons) (198.5 millions tons)

11. 11 Transportation Economies of Scale 0 500 1,000 13550 45,000 tons per ship 1,800 tons per barge 100 tons per rail car 20 tons per truck.4 - 1.2 Cents / Ton Mile 2 - 4 Cents / Ton Mile 6 - 11 Cents / Ton Mile 15 - 35 Cents / Ton Mile Transportation Mode – Cost Per Ton Mile

12. Producing Locations Major Shipping Points Other Shipping Points Producing Locations Major Shipping Points Other Shipping Points Maturing Distribution Network – Water Markets St. Croix Aruba Trinidad Guyana Suriname Nova Scotia Prince Edward Island New York City Linden Philadelphia Wilmington, DE Sparrows Pt. Wilmington, NC Charleston Savannah Brunswick Jacksonville Freeport Bahamas Tampa Pascagoula New Orleans Beaumont LakeCharles Lake Charles MobilePensacola Panama City Port Canaveral Three Rivers Kaskaskia Houston 12

13. 13 Scarcity = Increased Pricing Based on latest guidance of 4% to 6% volume decrease (1 ) Selling price is established locally at the point of sale and is subject to competitive and other factors at each locality. ASP increases reflect the average of the Corporation’s selling price across all markets, some of which may have already been implemented. Local prices can vary significantly from this average. (1) 11% - 12%

14. 14 Demand Segments Infrastructure 46% 2006 Commercial 27% 2007 Infrastructure  Commercial  Residential  Other  Estimated percentage of 2006 aggregates product line shipments Note: These percentages do not vary significantly across markets, with the exception of Florida which is dominated by infrastructure demand.

15. 15 Cost Reduction Initiatives Lemon Springs Quarry

16. 16 Cost Reduction Initiatives Excellent Best Practices Program Increased Plant Automation Overhead Reduction Better Information Systems Effective Management of Benefits Cost

17. 17 Plant Automation Sensors maximize efficient flow of material through crushing process Results in lower operating costs (cost per ton produced) Reduces headcount (allows one individual to run plant via sensors, cameras, etc.)

18. 18 Headcount Reduction Net sales per average number of employees up 71% over five-year period ended December 31, 2006 6,000 5,700 5,600 Hourly 6,400 Note: Headcount equal to average number of employees 6,700 Salaried

19. 19 Capital Initiatives Bahama Rock

20. 20 Capital Spending Priorities Capital spending has been focused on the long-haul distribution network Current priority-recapitalize the Southeast operations 2007 capital spending expected to be approximately $235 million

21. 21 Capital Projects Production Capacity Expansion (tons) Quarry/StateSpend ($M) Timing From To COMPLETED Lemon Springs, NC $20 2006 1.5M 3.5M North Troy, OK $40 2006 --- 5.0M Three Rivers, KY $50 2007 5.5M 8.0M+ UNDERWAY Weeping Water, NE $35 Q4 2007 2.0M 3.5M FUTURE Augusta, GA$45 - $55 2008 - 2009 2.0M 6.0M Junction City, GA$75 - $802008 - 2009 2.5M 8.0M Camak, GA$45 - $552009 - 2010 2.0M 6.0M Ruby, GA$70 - $802010 - 2011 2.5M 8.0M North Columbia, SC$40 - $502008 - 2009 2.0M 6.0M North Indianapolis, INUnknown Unknown 2.0M 4.0M GREEN SITES Fayetteville, NCUnknown 2007 - 2008 ---1.0M by 2010 Selma, NCUnknown 2008 - 2009 ---1.0M by 2012

22. 22 Long-Haul Network - Three Rivers (KY)  Second largest capital project in Corporation’s history  New plant and load out provide variable cost savings  Forecasted after-tax Internal Rate of Return - 23%

23. 23 Three Rivers (KY) – Strategic Location Key site in long-haul transportation optimization strategy Shipments and deliveries via barge, ship and rail Diversified products and transportation modes provide competitive advantage

24. 24 Underground Mines Largest operator of underground aggregates mines in the United States (15 locations) Neighbor-friendly alternative Production costs higher than surface mines Long-term capital focus North Indianapolis Mine

25. 25 Operating Margin In 5 years: –1000 bp improvement in consolidated operating margin –Aggregates business operating margin of 32%+ Continued pricing improvements Ongoing cost reduction initiatives –Plant automation –Headcount and overhead reduction

26. 26 Aggregates Business Net Sales ($M) Quarter Ended Percent June 30, Change Quarter Ended Percent June 30, Change 2007 (1) 2006 (1) 2007 (1) 2006 (1) Mideast Group $ 171 $ 154 11% Southeast Group 143 144 (1%) West Group 181 182 (1%) Total Aggregates $ 495 $ 480 3% Total Aggregates $ 495 $ 480 3% (1) All amounts presented are from continuing operations as presented in the June 30, 2007 Form 10-Q.

27. 27 Aggregates Business Net Sales ($M) Six Months Ended Percent June 30, Change Six Months Ended Percent June 30, Change 2007 (1) 2006 (1) 2007 (1) 2006 (1) Mideast Group $ 288 $ 271 6% Southeast Group 277 271 2% West Group 305 320 (5%) Total Aggregates $ 870 $ 862 1% Total Aggregates $ 870 $ 862 1% (1) All amounts presented are from continuing operations as presented in the June 30, 2007 Form 10-Q.

28. 28 Aggregates Business Operating Earnings ($M) Quarter Ended Percent June 30, Change Quarter Ended Percent June 30, Change 2007 (1) 2006 (1) 2007 (1) 2006 (1) Mideast Group $ 73 $ 57 30% Southeast Group 34 28 23% West Group 32 34 (7%) Total Aggregates $ 139 $ 119 17% Total Aggregates $ 139 $ 119 17% (1) All amounts presented are from continuing operations as presented in the June 30, 2007 Form 10-Q.

29. 29 Aggregates Business Operating Earnings ($M) Six Months Ended Percent June 30, Change Six Months Ended Percent June 30, Change 2007 (1) 2006 (1) 2007 (1) 2006 (1) Mideast Group $ 108 $ 86 26% Southeast Group 61 43 41% West Group 30 41 (25%) Total Aggregates $ 199 $ 170 17% Total Aggregates $ 199 $ 170 17% (1) All amounts presented are from continuing operations as presented in the June 30, 2007 Form 10-Q.

30. 30 Aggregates Business Operating Margin Quarter Ended YTD Quarter Ended YTD June 30, June 30, June 30, June 30, 2007 (1) 2006 (1) 2007 (1) 2006 (1) 2007 (1) 2006 (1) 2007 (1) 2006 (1) Mideast Group 42.9% 36.8% 37.5% 31.7% Southeast Group 23.6% 19.1% 22.0% 16.0% West Group 17.7% 18.9% 9.9% 12.7% Total Aggregates 28.1% 24.7% 22.9% 19.7% Total Aggregates 28.1% 24.7% 22.9% 19.7% (1) All amounts presented are from continuing operations as presented in the June 30, 2007 Form 10-Q.

31. 31 Aggregates Business Financials ($M) Year Ended Percent December 31, Change Year Ended Percent December 31, Change 2006 (1) 2005 (1) 2006 (1) 2005 (1) Net Sales $1,792 $1,615 11% Operating Earnings $ 400 $ 316 27% Operating Margin 22.3% 19.6% (1) All amounts presented are from continuing operations as presented in the 2006 Annual Report.

32. 32 Specialty Products

33. 33 Specialty Products Financials ($M) Quarter Ended Percent June 30, Change Quarter Ended Percent June 30, Change 2007 2006 2007 2006 Net Sales $ 40 $ 36 9% Operating Earnings $ 8 $ 7 15% Operating Margin 20.4% 19.4%

34. 34 Specialty Products Financials ($M) Six Months Ended Percent June 30, Change Six Months Ended Percent June 30, Change 2007 2006 2007 2006 Net Sales $ 78 $ 78 1% Operating Earnings $ 15 $ 14 11% Operating Margin 19.8% 18.0%

35. 35 Specialty Products Financials ($M) Year Ended December 31, Year Ended December 31, 2006 20052004 2006 20052004 Net Sales $ 151 $ 131 $ 110 Operating Earnings $ 23 $ 10 $ 7 Operating Margin 14.9% 7.3% 6.3%

36. 36 Consolidated Financial Information Pensacola Yard

37. 37 Consolidated Financials ($M) Quarter Ended Percent June 30, Change Quarter Ended Percent June 30, Change 2007 2006 2007 2006 Net Sales (1) $ 535 $ 517 3% Operating Earnings (1) $ 137 $ 119 14% Net Earnings $ 83 $ 76 9% Earnings per Diluted Share $ 1.92 $ 1.63 18% (1) Net sales and operating earnings are from continuing operations as presented in the June 30, 2007 Form 10-Q.

38. 38 Consolidated Financials ($M) Six Months Ended Percent June 30, Change Six Months Ended Percent June 30, Change 2007 2006 2007 2006 Net Sales (1) $ 949 $ 940 1% Operating Earnings (1) $ 194 $ 171 13% Net Earnings $ 116 $ 107 9% Earnings per Diluted Share $ 2.62 $ 2.29 14% (1) Net sales and operating earnings are from continuing operations as presented in the June 30, 2007 Form 10-Q.

39. 39 Consolidated Financials ($M) Year Ended Percent December 31, Change Year Ended Percent December 31, Change 2006 2005 2006 2005 Net Sales (1) $1,943 $1,746 11.3% Operating Earnings (1) $ 388 $ 309 25.5% Net Earnings $ 245 $ 193 27.4% Earnings per Diluted Share $ 5.29 (2) $ 4.08 (3) 29.7% (1) Net sales and operating earnings are from continuing operations as presented in 2006 Annual Report. (2) Earnings per diluted share includes a charge of $0.05 related to the write off of the composite truck trailer business. (3) Earnings per diluted share includes favorable tax items of $0.15 per diluted share.

40. 40 Capital Structure Objectives Leverage target of 2.0x – 2.5x Debt-to-EBITDA Maintain solid investment grade credit rating For outstanding debt, adjust fixed to floating ratio to 20% - 30% floating

41. 41 April 2007 Debt Issuance $475 million debt issuance –$250 million 6.25% Senior Notes due 2037 –$225 million Floating Rate (3 month LIBOR + 15 bps) Senior Notes due 2010 Uses of proceeds –Share repurchases –$150 million planned increase in commercial paper to fund refinance of August 2007 maturity and additional value creating activities

42. 42 2007 Uses of Cash ($M) Six Months Ended June 30, Six Months Ended June 30, 2007 2006 2007 2006 Capital investment $ 115 $ 158 Share repurchases $ 494 $ 83 Dividends $ 24 $ 21

43. 43 Uses of Cash ($M) Pension Investment $ 12$ 15$ 51Pension Investment $ 12$ 15$ 51 Capital Investment$266 $221$163Capital Investment$266 $221$163 Share Repurchases$173 $176$ 75Share Repurchases$173 $176$ 75 DividendsDividends (20% per share increase in 9/06) $ 46 $40$ 37 (20% per share increase in 9/06) $ 46 $40$ 37 Net Cash on Hand$ 24 $ 69 $152Net Cash on Hand$ 24 $ 69 $152 20052004 2006

44. Cash Returned to Shareholders ($M) $49 $111 $216 $219 Dividends Share Repurchases 44 $518

45. 45 The document attached represents one part of a presentation which has been or will be made. It is not a complete record of the presentation because it does not reflect the lengthy oral comments which will be part of the presentation. This document is not intended to be a substitute for our Form 10-K or other SEC filings. Further, while we may make presentations from time to time, please understand that we do not undertake any obligation to update any information contained in these materials. Finally, any forward-looking statements are, by their nature, uncertain and dependent upon numerous contingencies, including the accuracy of the assumptions underlying the statements, which could cause actual results and events to differ materially from those indicated in such forward-looking statements. If you have any questions or comments, please contact Investor Relations at 919-783-4660. Thank you.