CSN Makes Announcement in Relation to Tender Offer to Acquire Shares of CIMPOR - CIMENTOS DE PORTUGAL, SGPS, S.A.

USA - English

• USA - English

SAO PAULO, Feb. 23 /PRNewswire-FirstCall/ -- Companhia Siderurgica Nacional (NYSE: SID) ("CSN") hereby gives notice to the shareholders of CIMPOR - CIMENTOS DE PORTUGAL, SGPS, S.A. ("CIMPOR") that CSN, through its indirect subsidiary CSN Cement S.a.r.l., has announced the final results of the tender offer to acquire up to all of the shares issued by CIMPOR pursuant to the terms and conditions set forth in an amended prospectus, dated February 16, 2010, ("Amended Prospectus") and governed by Portuguese law. The conditions specified in the Amended Prospectus were not met and no shares were acquired.

A notice with the final results and a summary of the tender offer ("Final Notice") has been made available to the public on the website of the Portuguese Securities Market Commission (Comissao do Mercado de Valores Mobiliarios - CMVM) at http://www.cmvm.pt/en and is also available on the internet in Portuguese at http://www.csn.com.br/ri and in English at http://www.csn.com.br/ir. In addition, a non-binding English free translation of the Final Notice is available under cover of Form 6-K on the website of the U.S. Securities and Exchange Commission at www.sec.gov. For further information please contact CSN via email through [email protected], by telephone at 1 866 201 2904 (toll free) or by facsimile at +55 (11) 3049 7212.

This announcement is neither an offer to purchase nor a solicitation of an offer to sell shares. The offer was made solely by the Amended Prospectus and was addressed solely to the shareholders of CIMPOR.

SOURCE Companhia Siderurgica Nacional