Nucor Corporation is an American steel producer headquartered in Charlotte, North Carolina. Founded in 1940, it has grown to become one of the largest steel manufacturers in the United States. Nucor is known for its innovative use of electric arc furnaces, which allow for more efficient and environmentally friendly steel production. The company operates numerous facilities across the country, producing a variety of steel products, including rebar, sheet steel, and structural steel. Nucor's commitment to sustainability and recycling has made it a leader in the steel industry, as it recycles millions of tons of scrap metal each year.