NAICS Code: 331110 Iron and Steel Mills and Ferroalloy,
331110 - Iron and Steel Mills and Ferroalloy Manufacturing . This industry comprises establishments primarily engaged in one or more of the following: (1) direct reduction of iron ore; (2) manufacturing pig iron in molten or solid form; (3) converting pig iron into steel; (4) making steel; (5) making steel and manufacturing shapes (e.g., bar, plate, rod, sheet, strip, wire); (6) making steel,Iron and steel industry in the United States - Wikipedia,Most iron and steel in the United States is now made from iron and steel scrap, rather than iron ore. The United States is also a major importer of iron and steel, as well as iron and steel products. Employment as of 2014 was 149,000 people employed in iron and steel mills, and 69,000 in foundries.EPA Smart Sectors: Iron and Steel,Iron and steel facilities are either integrated mills or electric arc furnaces. Integrated mills produce steel from iron ore using a blast furnace, which consumes carbon, primarily in the form of coke, to convert iron ore to molten iron, known as "pig iron."