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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001292814-10-000157.txt : 20100126
<SEC-HEADER>0001292814-10-000157.hdr.sgml : 20100126
<ACCEPTANCE-DATETIME>20100126072025
ACCESSION NUMBER:		0001292814-10-000157
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100331
FILED AS OF DATE:		20100126
DATE AS OF CHANGE:		20100126

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL STEEL CO
		CENTRAL INDEX KEY:			0001049659
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14732
		FILM NUMBER:		10546052

	BUSINESS ADDRESS:	
		STREET 1:		RUA LAURO MULLER
		STREET 2:		116 36 ANDAR
		CITY:			RIO DE JANEIRO RJ BR
		STATE:			D5
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>sid20100126_6k.htm
<DESCRIPTION>NOTICE TO THE MARKET
<TEXT>
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<HEAD>
   <TITLE>Provided by MZ Technologies</TITLE>

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<BODY style="font-family: 'Times New Roman, Times, Serif'; text-align:justify; font-size:11px" bgcolor="#ffffff">

<HR SIZE="4" NOSHADE COLOR="#000000" ALIGN="left">
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B>Washington, D.C. 20549 </B></FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<HR align=center NOSHADE WIDTH="21%" COLOR="#000000">
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>FORM 6-K </B></FONT></DIV>
<DIV><FONT
SIZE="1">&nbsp;</FONT></DIV
><DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"
COLOR="#000000">Report of Foreign Private Issuer<BR>
  Pursuant to Rule 13a-16 or 15d-16 of the</FONT></DIV>
<DIV
ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000">Securities Exchange Act of 1934</FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center">
  <div><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B> For the month of January, 2010</B></FONT></DIV>
  <p></p>
  <FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B> Commission File Number 1-14732 </B></FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
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<DIV><FONT
SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B> COMPANHIA SIDER&#218;RGICA NACIONAL </B></FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Exact name of registrant as specified in its charter) </FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center"> </DIV>
<P></P>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B> National Steel Company </B></FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Translation of Registrant's name into English)</FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<P></P>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B> Av. Brigadeiro Faria Lima 3400, 20&#186; andar<BR>
  S&#227;o Paulo, SP, Brazil<BR>
  04538-132 </B></FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Address of principal executive office)</FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<P>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"> Indicate by check mark whether the registrant files or will file annual reports<BR>
  under cover Form 20-F or Form 40-F.&nbsp;</FONT>
    <P></P>
    Form 20-F ___X___ Form 40-F _______
    <P>&nbsp;<FONT FACE="Times New Roman, Times, Serif" SIZE=3>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. </FONT>&nbsp;</P>
    Yes _______ No ___X____
    <p></p>
</DIV>
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<H5 align="left" style="page-break-before:always"></H5>
<A name="page_1"></A>


<P align="center">
<B>COMPANHIA SIDER&Uacute;RGICA NACIONAL</B><br>
Publicly-held Company<br>
Corporate Taxpayer's ID (CNPJ/MF): 33.042.730/0001 -04<br>
Company Registry (NIRE): 3330001159-5<BR>
</P>
<P align="center">
<B>NOTICE TO THE MARKET</B><BR>
</P>
<P>
Companhia Sider&uacute;rgica Nacional (&#147;CSN&#148;) informs its shareholders and the public in general that, following the Notice to the Market released on 30 December, 2009 and the Material Fact Notice released on 18 December 2009, CSN Cement
S.&agrave;.r.l. (formerly Seavon Holding S.&agrave;.r.l.), a company organized and existing under the laws of Luxembourg and entirely indirectly held by CSN, in the capacity of Offeror and replacing CSN in such capacity, has made public as of this
date a Second Addendum to the Preliminary Announcement for the Launching of a General Takeover Bid for the Acquisition of Shares representing the Share Capital of Cimpor &#150; Cimentos de Portugal, SGPS, S.A., as an addendum to the Preliminary
Announcement made public on 18 December 2009 and to the first addendum to such announcement disclosed on the same date. </P>
<P>
Under the referred Second Addendum, it is informed that the competition authorities to which approval the bid is conditioned are the European Commission, the Rekabet Kurumu (Turkish Competition Authority), the Ministry of Commerce of the
People&#146;s Republic of China and the South African Competition Commission, which are the competition authorities for the European Union, Turkey, People&#146;s Republic of China and South Africa, respectively.  It is also informed that the Offeror
and CSN are considering whether to decide, simultaneously to the launching of the Offer, to make use of an option provided for in the European Commission Regulation on the control of concentrations between undertakings (which allows the
implementation of a tender offer prior to a decision of the European Commission provided that the acquirer does not exercise the voting rights attached to the relevant securities until a favorable decision is taken or does so before such a decision
is taken only to maintain the full value of its investments based on a derogation granted by the Commission), as well as to withdraw the condition related to the decisions of the other competition authorities Finally, for the purposes above, it is
clarified that a pre-notification was made to the European Commission on 4 January 2010 and the final notification was filed on 14 January 2010. The deadline for a decision from the European Commission ends on 18 February 2010. </P>
<P align="center">
<br>
Rio de Janeiro, January 26, 2010 <br>
<br>
<BR>
<B>Companhia Sider&uacute;rgica Nacional</B><BR>
Paulo Penido Pinto Marques <BR>
Investor Relations Officer <BR>
</P>

<H5 align="left" style="page-break-before:always"></H5>
<hr size="2" noshade color="#000000" align="left">

<p><FONT SIZE="1">&nbsp;</FONT></p>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B>SIGNATURE </B></FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV STYLE="text-indent:4%"><FONT FACE="Times New Roman" SIZE="3"COLOR="#000000">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. </FONT></DIV>
<p></p>
<DIV STYLE="text-indent:4%"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"> Date: January 26, 2010</FONT></DIV>
<p></p>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center">
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="50%" BORDER="0">
    <TR>
      <TD VALIGN="top" COLSPAN="3" WIDTH="50%"><DIV align=left><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"> COMPANHIA SIDER&#218;RGICA NACIONAL </FONT></DIV></TD>
    </TR>
    <TR>
      <TD HEIGHT="16"></TD>
    </TR>
    <TR>
      <TD VALIGN="top" WIDTH="5%"><DIV align=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">By:</FONT></DIV></TD>
      <TD VALIGN="bottom" ALIGN="center" WIDTH="43%"><DIV ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000">/<SMALL>S</SMALL>/&nbsp;Benjamin Steinbruch </FONT></DIV>
          <HR NOSHADE SIZE=1 COLOR="#000000" ALIGN="left"></TD>
    </TR>
    <TR>
      <TD><FONT SIZE="1">&nbsp;</FONT></TD>
      <TD VALIGN="bottom" ALIGN="center" WIDTH="43%"><DIV ALIGN=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B> Benjamin Steinbruch
 </B></FONT></DIV>
          <DIV ALIGN=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Chief Executive Officer <br>
          <br>
      </B></FONT></DIV></TD>
    </TR>
  </TABLE>
</DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<P>&nbsp;</P>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center">
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="50%" BORDER="0">
    <TR>
      <TD VALIGN="top" COLSPAN="3" WIDTH="50%"><DIV align=left></DIV></TD>
    </TR>
    <TR>
      <TD HEIGHT="16"></TD>
    </TR>
    <TR>
      <TD VALIGN="top" WIDTH="5%"><DIV align=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">By:</FONT></DIV></TD>
      <TD VALIGN="bottom" ALIGN="center" WIDTH="43%"><DIV ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000">/<SMALL>S</SMALL>/&nbsp;Paulo Penido Pinto Marques </FONT></DIV>
          <HR NOSHADE SIZE=1 COLOR="#000000" ALIGN="left"></TD>
    </TR>
    <TR>
      <TD><FONT SIZE="1">&nbsp;</FONT></TD>
      <TD VALIGN="bottom" ALIGN="center" WIDTH="43%"><DIV ALIGN=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B> Paulo Penido Pinto Marques
 </B></FONT></DIV>
          <DIV ALIGN=left><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Chief Financial Officer and  Investor Relations Officer<br>
          <br>
      </B></FONT></DIV></TD>
    </TR>
  </TABLE>
</DIV>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<P>&nbsp;</P>
<DIV><FONT SIZE="1">&nbsp;</FONT></DIV>
<DIV ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"
COLOR="#000000"><B>FORWARD-LOOKING STATEMENTS </B></FONT></DIV>
<P align=justify><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 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. </FONT></P>
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