Nucor Corporation is a producer of steel and related products based in Charlotte, North Carolina. It is the largest steel producer in the United States, as well as the largest "mini-mill" steelmaker (i.e. it uses electric arc furnaces to melt scrap steel as opposed to blast furnaces to melt iron). It is also the biggest recycler of scrap in North America. Nucor operates 23 scrap-based steel production mills. In 2019, the company produced and sold approximately 18.6 million tons of steel and recycled 17.8 million tons of scrap. Nucor produces steel bars (carbon and alloy steel), Beams, sheet/flat rolled steel, plate, steel joists, joist girders, steel deck, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, metal building systems, light gauge steel framing, steel grating, expanded metal, and wire mesh. In addition, Nucor also brokers ferrous and nonferrous metals, pig iron and HRI/DRI, supplies ferro-alloys, and processes ferrous and nonferrous scrap through its David J. Joseph Company subsidiary.