Companhia Siderurgica Nacional engages in the production and sale of integrated steel. It operates through the following segments: Steel, Mining, Port Logistics, Railway Logistics, Energy, and Cement. Read More The Steel segment offers flat steel, long steel, metallic containers and galvanized steel. The Mining segment encompasses the activities of iron ore and tin mining. The Port Logistics segment involves in the operation of the terminals built in the privatization period. The Railway Logistics segment holds interest in the railroad companies. The Energy segment consists of generation plants such as electricity to power rolling mills, production lines, hot metal processing, coking plants and auxiliary units. The Cement segment produces CP-III type cement as well as explores limestone and dolomite. The company was founded on April 9, 1941 and is headquartered in São Paulo, Brazil. The listed name for SID is Companhia Siderurgica Nacional S.A. (CSN).