Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

COMPANHIA SIDERÚRGICA NACIONAL

Publicly Held Company

Corporate Taxpayer ID (CNPJ/MF) 33.042.730/0001-04

Company Registry (NIRE) 3330001159-5

NOTICE TO THE MARKET

Companhia Siderúrgica Nacional (“CSN”) announces that it has decided to fully redeem, on October 14, 2010 (“Redemption Date”), the Guaranteed Perpetual Bonds (“Guaranteed Perpetual Bonds”) issued in 2005 through its wholly owned subsidiary CSN Islands X Corp. and guaranteed by CSN, with an interest coupon of 9.50% per annum and principal of US$ 750 million, plus interest accrued and not paid up to the Redemption Date and any additional amounts payable in relation to the Guaranteed Perpetual Bonds.

This press release shall not constitute an offer to buy nor the solicitation of an offer to sell the Perpetual Bonds in the United States, Brazil or in any other jurisdiction in which such offer or sale is prohibited.

Rio de Janeiro, September 10, 2010

Companhia Siderúrgica Nacional

Paulo Penido Pinto Marques

Investor Relations Officer

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.