2. 2 Forward-Looking Statements Certain statements made in this presentation are forward-looking statements that involve risks and uncertainties. These forward-looking statements reflect the Company’s best judgment based on current information, and although we base these statements on circumstances that we believed to be reasonable when made, there can be no assurance that future events will not affect the accuracy of such forward-looking information. As such, the forward-looking statements are not guarantees of future performance, and actual results may vary materially from the results and expectations discussed herein. Factors that might cause the Company’s actual results to differ materially from those anticipated in forward-looking statements include, but are not limited to: (1) the sensitivity of the results of our operations to prevailing steel prices and the changes in the supply and cost of raw materials, including scrap steel; (2) availability and cost of electricity and natural gas; (3) market demand for steel products; (4) competitive pressure on sales and pricing, including pressure from imports and substitute materials; (5) uncertainties surrounding the global economy, including excess world capacity for steel production; (6) U.S. and foreign trade policy affecting steel imports or exports; (7) significant changes in government regulations affecting environmental compliance; (8) the cyclical nature of the domestic steel industry; (9) capital investments and their impact on our performance; and (10) our safety performance. The following discussion should be read in conjunction with the audited consolidated financial statements and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” contained in Nucor’s Annual Report on Form 10-K for the year ended December 31, 2006.

3. 3 53 Operating Facilities in 18 states and Trinidad In 2006, 11,900 employees generated $14.8 billion in sales and 22.3 million tons of steel shipments 2006 sales per employee of $1.275 million Corporate Staff of 70 Employees Largest recycler in the United States Nucor Overview

4. 4 Profitable every year and every quarter since 1966 Sales have grown from $3.6 billion in 1996 to $14.8 billion in 2006 Steel shipments have grown from 8.4 million tons in 1996 to 22.3 million tons in 2006 Net Income has grown from $248 million in 1996 to $1.8 billion in 2006 Nucor Overview

5. 5 North America’s most diversified steel producer Nucor Overview Key Facilities: Bar Mill Group (11) Structural Mills (2) Plate Mills (2) Vulcraft (Joist/Deck -16) Cold Finish Group (4) Sheet Mill Group (11) Building Systems Group (3) Fastener Division (1) Nucon (2)

6. 6 Steel Shipments 1996-2006 (millions of tons)

7. 7 Net Sales 1996-2006 (millions of dollars)

8. 8 Pre-Tax Profit / Ton 1996-2006

9. 9 Net Income 1996-2006 (millions of dollars)

10. 10 Cash from Operations 1996-2006 ( millions of dollars)

11. 11 Cash Dividends Paid 1996-2006 ( millions of dollars)

12. 12 Record 2006 Results RECORD EPS of $5.68 in 2006 – up 38% from 2005 EPS of $4.13 and THIRD CONSECUTIVE ANNUAL EARNINGS RECORD 2006 EPS of $5.68 SIX TIMES GREATER than 2000 EPS of $0.95 posted at last peak in economic and steel market cycles DISCIPLINED execution of Nucor’s four-pronged growth strategy has paid off – significant expansion in earnings power Third consecutive annual earnings record in 2006 AGAIN PROVED THE VALUE OF NUCOR’S POSITION AS THE MOST DIVERSIFIED STEEL PRODUCER in North America In 2006, ROE exceeded 38% and $1.2 billion of cash returned to shareholders via dividends & share repurchases – continue to build upon Nucor’s long-term record as an effective steward of our shareholders’ valuable capital

13. 13 2006 Return On Equity (%)

14. 14 2006 Return On Capital Employed (%) ROCE = EBIT / (Total Assets – Current Liabilities)

15. 15 Nucor’s Position Of Strength To Continue Growing Shareholder Value Our Culture Financial Strength Diversified Product Mix Market Leadership Technological Innovation

16. 16 It Starts With Our Culture Commitment to Employees TEAMWORK Pay For Performance Continual Improvement Lean management + decentralized structure = entrepreneurial spirit Nucor’s Employees Take Ownership Of Taking Care Of Our Customers!!!

17. 17 Cash Provided By Operations was a RECORD $2.3 Billion in 2006 Over past three years, Nucor has generated cash from operations exceeding $5.4 Billion At yearend 2006, Debt = 15% Of Total Capital Debt Rated “A+” By S&P And “A1” By Moody’s – Highest North American Metals/Mining Debt Ratings Simple Capital Structure – and no off-balance sheet financing arrangements Superior Financial Flexibility Financial Strength

18. 18 Diversified Product Mix Steel Production Capacity (tons) Hot Rolled Sheet ( Cold Rolled Sheet4.1 million) (Galvanized1.5 million) 10.8 million Bars8.0 million Structural 3.7 million Plate2.8 million Total Steel 25.3 million

19. 19 Nucor Steel Mill Capacity Growth 2000-2006 (millions of tons)

20. 20 Diversified Growth: 2000 – 2006 Steel Shipments (millions of tons)

21. 21 Diversified Product Mix Steel Products Production Capacity (tons) Steel Joists 715,000 Steel Deck530,000 Cold Finished Bars490,000 Steel Buildings145,000 Total Steel Products 1.9 million

22. 22 Diversified Product Mix 2006 Sales Tons

23. 23 Largest U.S. structural steel producer Largest U.S. steel bar producer Largest U.S. steel joist producer Largest U.S. steel deck producer Largest U.S. cold finished bar producer Market Leadership

24. 24 Technological Innovation First to commercialize thin-slab casting Near net shape beam blank casting of wide-flange beams (structural steel) Focus on new disruptive and leapfrog technologies continues!!! Castrip ® – direct strip casting of carbon sheet steel HIsmelt ® – converts iron ore to liquid metal or pig iron; both a blast furnace replacement technology and a hot metal source for electric arc furnaces

25. 25 Technological Innovation – Castrip® Strip casting Produces ultra-thin gauge hot rolled steel with superior properties (cold rolled replacement at hot band cost) Minimizes environmental and economic impact (See www.castrip.com) Controlled atmosphere Casting rolls Ladle Tundish Transition piece Pinch rolls Hot rolling stand 2 nd hot rolling stand (optional) Shear Down Coilers........................

26. 26 Conventional Slab Casting 200-300 mm thick 20-40 metric ton coil 1-2m/minute Gas cutter Cooling Reheat furnace Rougher Coil box Finisher 1-10mm thick Coiler 500-800 m Run out table cooling Castrip® Scale of Operations Comparison 26

27. 27 (ladle through hot band) Castrip® Energy & Emissions Comparison (ladle through hot band) 0.00 0.05 0.10 0.15 0.20 0.25 GGE (t CO2 equiv/t).02.12.22 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Energy Consumed (GJ/t).2 1.0 1.7

28. 28 Technology For The 21 st Century – HIsmelt Direct smelting process being developed by Rio Tinto, Nucor, Mitsubishi and Shougang Blast furnace replacement technology and hot metal source for electric arc furnaces Production at Kwinana, Australia plant started up operations in Q2-2005 – and full production expected to be reached over a 3 year ramp-up period Future royalty stream for partners Raw material source for Nucor

29. 29 Technology For The 21 st Century – HIsmelt (See www.hismelt.com)

30. 30 Growth Opportunities: Four- Pronged Strategy Position of strength allows us to capitalize on marketplace opportunities with our flexible growth strategy – and continue Nucor’s successful tradition as a cyclical growth company. Nucor’s 4 Pronged Growth Strategy 1)Optimize Existing Operations 2)Pursue Strategic Acquisitions 3)Greenfield Growth – capitalizing on significant cost advantages from new technologies and unique marketplace niches 4)Grow Globally through joint ventures leveraging new technologies

31. 31 Optimize Existing Operations CONTINUAL IMPROVEMENT In Safety, Quality & Cost – Our #1 Priority Every Day!!! Nucor “BESTmarking” Sheet Mill Group’s strategy of climbing the value chain by providing value-added products and services to value-appreciative customers Raw Materials Strategy to develop supplies of high quality scrap substitutes Nucor’s very proactive role in the fight for Real Free Trade

32. 32 Optimize Existing Operations – Decatur Galvanizing Facility Sheet Mill Group announced in June 2006 plans to construct Nucor’s fourth galvanizing facility – increasing Nucor’s total galvanizing capacity by one-third to 2 million tons per year To be located at Decatur, Alabama sheet mill Building on successful acquisitions in Decatur of hot rolled sheet mill in 2002 and cold mill in 2004 – Nucor well- positioned to capitalize on expanding Southeastern U.S. market for value-added sheet steels Annual capacity of about 500,000 tons – with ability to galvanize 72-inch wide sheet; cost of project will be approximately $150 million; production start-up in second half of 2008

33. 33 Optimize Existing Operations – Raw Materials Strategy Develop supplies of high quality scrap substitutes – control approximately one-third of Nucor’s iron units annual consumption At our current consumption rate, will require between 6,000,000 to 7,000,000 tons per year of high quality scrap substitutes Major step forward achieved with successful start-up of Nu-Iron direct reduced iron plant in Trinidad – with annual capacity of 2 million tons Raw materials strategy driven by Nucor’s ongoing expansion of our sheet & SBQ product portfolio into higher quality grades

34. 34 Strategic Acquisitions Nucor’s Acquisition Criteria 1.Don’t over-pay 2.Stick with businesses we understand 3.CULTURAL COMPATIBILITY Our DISCIPLINED acquisition strategy has greatly expanded Nucor’s platform for generating earnings and attractive returns on our shareholders’ capital

35. 35 Acquisitions History Auburn Steel assets purchased March 2001– 430,000 tons capacity bar mill in New York ITEC Steel assets purchased November 2001 and renamed Nucon Steel – producer of load bearing light gauge steel framing Trico Steel assets purchased July 2002 – 1.9 million tons capacity hot rolled sheet mill in Alabama Birmingham Steel assets purchased December 2002 – 4 bar mills (located in Alabama, Mississippi, Illinois, and Washington) with combined capacity of 2.0 million tons North Star Kingman assets purchased March 2003 – idled bar mill in Arizona; operations not re-started

36. 36 Acquisitions History One-half interest in Harris Steel, Inc. purchased February 2004 – Harris Steel Group’s U.S. rebar fabrication operations Corus Tuscaloosa assets purchased July 2004 – 800,000 tons capacity plate mill in Alabama Worthington Industries cold rolling mill assets in Decatur, Alabama purchased August 2004 – 1.0 million tons capacity (600,000 tons annealing capacity) facility located adjacent to Alabama sheet mill (acquired in 2002) Fort Howard Steel’s Oak Creek, Wisconsin assets purchased February 2005 – cold finished bar facility with capacity of 140,000 tons Marion Steel assets purchased June 2005 – 450,000 tons capacity bar mill in Ohio

37. 37 Acquisitions History Connecticut Steel assets purchased May 2006 – 300,000 tons capacity bar products rolling mill and 85,000 tons fabrication capacity in Connecticut Verco Manufacturing Company assets purchased November 2006 – steel floor and roof decking producer with 100,000 tons capacity at 3 western U.S. facilities (Arizona, southern California, and northern California)

38. 38 Strategic Acquisitions – Harris Steel Group Harris Steel Group – announced in January 2007 an all-cash tender offer for all shares of Harris; with debt assumed, transaction value of approximately US$1.2 billion Major step forward implementing Nucor’s proven and highly profitable vertical integration strategy – Nucor, largest North American rebar producer, will become North America’s third largest rebar fabricator Harris Steel will be an extremely valuable growth platform – under Nucor ownership, Harris Steel will be able to accelerate its highly successful growth in rebar fabrication Harris Steel owns a cold finished bar producer, Laurel Steel – will expand Nucor’s market leadership in cold finished bars Attractive downstream growth opportunities offered by Harris Steel’s metal gratings, steel distribution, and steel trading businesses

39. 39 Strategic Acquisitions – Harris Steel Group

40. 40 Stoney Creek, ON Longueuil, QC Saint John, NB Fort Saskatchewan, AB Leduc, AB Thunder Bay, ON Fort McMurray, AB Calgary, AB Dartmouth, NS Mount Pearl, NF Ottawa, ON Montreal, QC Abbotsford, BC Surrey, BC Richmond, BC Seattle, WA Auburn, WA Carson City, NV Delta, BC Nanaimo, BC Livermore, CA Phoenix, AZ Salt Lake City, UT Edmonton, AB Sudbury, ON Regina, SK Saskatoon, SK Sarnia, ON Boston, MA Burlington, ON London, ON Bethlehem, PA Bolton, ON Windsor, ON Florence, KY McKees Rocks, PA Reinforcing Steel Fabrication Plants (“RPG”)  23 Canadian Facilities  11 U.S. Facilities Cold Finished Bar, Wire, Mesh (“IPG”)  1 Canadian Facility Steel & Aluminum Grating, Expanded Metal (“IPG”)  5 Canadian Facilities  6 U.S. Facilities Manufacturing / Distribution Boise, ID Other Operations:  Harris Supply Solutions: U.S.  Novosteel S.A.: Neuchatel, Switzerland; Montreal Canada (main offices).  Engineering offices:  Sri Lanka; Mississauga; Scarborough; and Dartmouth. Litchfield, IL Saegertown, PA Portland, OR Kelowna, BC Charlotte, NC Wexford, PA Fresno, CA Strategic Acquisitions – Harris Steel Group

41. 41 Greenfield Growth – Memphis SBQ Mill Bar Mill Group announced in July 2006 plans to construct Special Bar Quality (SBQ) products steel mill in Memphis, Tennessee to capitalize on significantly better cost structure compared to key competitors in the SBQ market, both domestic and foreign 850,000 tons annual capacity; capital costs reduced dramatically by utilizing the good assets we already have on the ground at Memphis site Complementing our mills in South Carolina and Nebraska, Memphis SBQ mill will position Nucor to provide the most diverse, highest quality, and lowest cost SBQ product offering in North America Production start-up expected in Q1-2008

42. 42 Performance Expectations 10% or better annual compound earnings growth (through the economic cycle) Return on invested capital exceeding our cost of capital Market leadership in every product group and business in which we compete Continue Nucor tradition of emerging from economic down-cycles stronger than before entering them!!!

43. 43 Nucor’s Success Nucor’s facilities Nucor’s capabilities Nucor’s financial strength Nucor’s strategies And, the single most important asset behind Nucor’s success – Nucor’s EMPLOYEES – THE RIGHT PEOPLE!!! NUCOR’S BEST YEARS ARE STILL AHEAD OF US!!!