Notice to the Market – CSN acquires minority interest in Riversdale Mining Ltd.


Companhia Siderúrgica Nacional (“CSN” or “Company”), in compliance with the provisions in Article 157 of Law 6,404/76, as well as with CVM Instruction 358/02, hereby informs its shareholders and the public that the Company’s Board of Directors approved the acquisition by the Company or by any of its direct or indirect subsidiaries of a minority interest in the capital stock of Riversdale Mining Limited (“Riversdale”), a mining company with shares listed on the Australian Stock Exchange. Said acquisition will include (i) 28,750,598 shares, representative of 14.99% of the capital stock of Riversdale and (ii) provided that governmental approval is obtained in connection with the foreign investment, according to applicable Australian legislation, 2,482,729 additional shares, representative of 1.3% of the capital stock of Riversdale, for the aggregate equity interest of 16.3% of the capital stock of Riversdale. The price per share shall be of six Australian dollars and ten cents (A$6.10), plus applicable costs.

Rio de Janeiro, November 24, 2009.

Companhia Siderúrgica Nacional
Paulo Penido Pinto Marques
Chief Investor Relations Officer

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