Material Fact – Commercial Notes Issue


COMPANHIA SIDERÚRGICA NACIONAL (“CSN” or “Company”), pursuant to Article 157 of Law 6404/76, and CVM Instruction 358/02, and complementing the Material Fact of December 18, 2009, hereby informs its shareholders and the public in general that its Board of Directors on the date hereof approved the issue, by the Company, of commercial notes (“Commercial Notes”), for public placement with limited efforts, totaling up to R$10 billion, in accordance with Instruction 134 of the Brazilian Securities and Exchange Commission (“CVM”) of November 1, 1990, CVM Instruction 155 of August 7, 1991, and the procedures established by CVM Instruction 476 of January 16, 2009 (“Issue”).

The proceeds of the Issue will be used to finance the public offer launched by CSN’s subsidiary CSN Cement S. à R.L., to acquire the shares of Cimpor – Cimentos de Portugal, SGPS, S.A. (“Offer”). The total amount and date of the Issue will be determined by the Board of Executive Officers. The issue will only take place if the Offer is successful under the terms and conditions established by CSN.

The Company will keep the Brazilian Securities and Exchange Commission (CVM), the BOVESPA and the market informed of any developments regarding the matters dealt with herein.

Rio de Janeiro, January 29, 2010

Companhia Siderúrgica Nacional
Paulo Penido Pinto Marques
Investor Relations Officer

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