Companhia Siderurgica Nacional (CSN) is a Brazil-based company primarily engaged in the steel industry. The Company divides its business into five segments: Steel sector, which is involved in the production, distribution and marketing of flat steel, galvanized steel and metal packaging; Mining sector, which is active in the production of iron ore; Cement sector, which is involved in the manufacture of cement, as well as in the exploration of limestone and dolomite; Logistics sector, which consists of two railway companies and a hub port, and Energy sector, which includes investments in energy generation projects to guarantee the Company�s self-sufficiency. As of December 31, 2011, the Company had a number of subsidiaries, such as Companhia Metalic Nordeste, Inal Nordeste SA, CSN Acos Longos SA, Companhia Metalurgica Prada, Sepetiba Tecon SA, CSN Energia SA, Transnordestina Logistica SA, Estanho de Rondonia SA and CSN Cimentos SA, among others.