producers operated as semiautonomous companies under the control of Siderbrás and were individually privatized during 1991 to 1993. Proposed merger/acquisition with Corus In 2006 CSN made a rival bid to acquire the Anglo-Dutch steel firm Corus, following an announcement the acquisition of Corus by Tata Steel of India for $8.1 billion (£4.5 billion, or £4.55 per share). Competitive bidding between the two companies raised the final price to £6.08 per share in 2007, with Tata outbidding CSN. CSN and Corus had earlier been partners in a Portuguese venture until early this year, when Corus sold its stake to CSN. Production CSN primarily operates as an integrated steel producer in Brazil. It produces a line of steel products, including slabs, which are semi-finished products used for processing hot-rolled, cold-rolled, or coated coils and sheet products; hot-rolled products comprising heavy-gauge hot-rolled coils and sheets, and light-gauge hot-rolled coils and sheets; cold-rolled products, including cold-rolled coils and sheets; and galvanized products consisting of flat-rolled steel coated with zinc or a zinc-based alloy. The company also offers tin mill products, including tin plate, tin free steel, low tin coated steel, and black plate products. CSN also mines iron ore, limestone, and dolomite, and maintains strategic investments in railroads and power supply companies. The company sells its steel products to customers in Brazil and 71 other countries in North America, Europe, and Asia through its sales force and distributors. It is considered one of the most productive steel-makers in the world, producing more than 6 million tons of raw steel and more than 5 million tons of laminates per year. Holdings CSN owns different firms, such as GalvaSud (in Porto Real, Rio de Janeiro), Inal (in Mogi das Cruzes, São Paulo and Barra Mansa, Rio de Janeiro), CSN PARANÁ (in Araucária, Paraná) and container (TECON) and coal (TECAR) terminals in the Itaguaí port (in Itaguaí, Rio de Janeiro). It also has control through shareholding in the railways MRS Logística, and the Companhia Ferroviária do Nordeste (CFN), in hydroelectric dams at Igarapava and Itá, and in factories in the United States and Portugal. Domestic government policies Anti-dumping, Countervailing Duties, Safeguards and Government Protectionism Protectionist measures adopted by the governments in some of CSN's main markets could adversely affect crucial export sales. In response to the increased production and exports of steel in many countries, anti-dumping, countervailing duties and safeguard measures have been imposed by countries which