Companhia Siderúrgica Nacional produces steel. The company operates through five segments including steel, mining, cement, logistics, and energy. The company primarily produces carbon steel and various steel products for the distribution, packaging, automotive, home appliance, and construction industries. The company's steel products include slabs, which are semi-finished products used for processing hot-rolled, cold-rolled or coated coils, and sheet products; hot-rolled products, such as heavy and light-gauge hot-rolled coils and sheets; cold-rolled coils and sheets; galvanized products comprising flat-rolled steel coated with zinc or a zinc-based alloy; and tin mill products consisting of flat-rolled low-carbon steel coils or sheets, which include tin plate, tin free steel, low tin coated steel, and black plate products. The company also owns various iron ore mines located in the state of Minas Gerais, including the Casa de Pedra mine, located in Congonhas; and the mines and mining rights, which include the Fernandinho mines in Itabirito, the Engenho mines in Congonhas, the Cayman mining rights in Rio Acima, and the Pedras Pretas mining rights in Congonhas. Its mining assets also include the Terminal de Carvão, the solid bulks terminal located in Itaguaí Port in the state of Rio de Janeiro; the Bocaina mines producing dolomite and limestone located in Arcos in the state of Minas Gerais; and a tin mine in Itapuã do Oeste in the State of Rondônia. In addition, the company engages in logistics business comprising railway and port facilities; produces and sells cement and clinker; and generates electric power with hydroelectric and thermoelectric sources. It serves customers directly through its sales force, as well as independent distributors and international brokers. The company also exports its products primarily in Asia, North America, Latin America, and Europe. Companhia Siderúrgica Nacional was founded in 1941 and is based in São Paulo, Brazil.