<SUBMISSION>
<ACCESSION-NUMBER>0001104659-07-073307
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20071004
<ITEMS>8.01
<ITEMS>9.01
<FILING-DATE>20071004
<DATE-OF-FILING-DATE-CHANGE>20071004
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>STEEL DYNAMICS INC
<CIK>0001022671
<ASSIGNED-SIC>3312
<IRS-NUMBER>351929476
<STATE-OF-INCORPORATION>IN
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
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<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>000-21719
<FILM-NUMBER>071157272
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<BUSINESS-ADDRESS>
<STREET1>6714 POINTE INVERNESS WAY
<STREET2>SUITE 200
<CITY>FORT WAYNE
<STATE>IN
<ZIP>46804
<PHONE>2604593553
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>6714 POINTE INVERNESS WAY
<STREET2>SUITE 200
<CITY>FORT WAYNE
<STATE>IN
<ZIP>46804
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a07-25324_18k.htm
<DESCRIPTION>8-K
<TEXT>
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</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">
 <div style="border:none;border-top:double windowtext 6.0pt;padding:0in 0in 0in 0in;"> <p style="border:none;margin:0in 0in .0001pt;padding:0in;"><a name="scotch"></a><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="font-size:10.0pt;margin:0in 0in 12.0pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES
AND EXCHANGE COMMISSION</font></b><br>
<b>WASHINGTON, DC&#160; 20549</b></p>

<div style="line-height:9.0pt;margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM 8-K</font></b></p>

<p align="center" style="margin:0in 0in 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934</font></b></p>

<p align="center" style="margin:0in 0in 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report
(date of earliest event reported): <b>October 4, 2007 (October
4, 2007)</b></font></p>

<p align="center" style="font-size:10.0pt;margin:0in 0in 12.0pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">STEEL
DYNAMICS, INC.</font></b><br>
(Exact name of registrant as specified in its charter)</p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;"><!-- SET mrlNoTableShading --><b>Indiana</b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-21719</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">35-1929476</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File
  Number)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">of
  incorporation)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification
  No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p align="center" style="margin:0in 0in 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="font-size:10.0pt;margin:0in 0in 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">6714
Pointe Inverness Way, Suite 200, Fort Wayne, Indiana 46804</font></b><br>
(Address of principal executive offices) (Zip Code)</p>

<p align="center" style="margin:0in 0in 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s
telephone number, including area code:&#160; <b>260-459-3553</b></font></p>

<p align="center" style="font-size:10.0pt;margin:0in 0in 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Not
Applicable</font></b><br>
(Former name or former address, if changed since last report)</p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box
below if the Form 8-K filing is intended to simultaneously satisfy the filing
obligation of the registrant under any of the following provisions:</font></p>

<p style="font-size:10.0pt;margin:0in 0in 12.0pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>

<p style="font-size:10.0pt;margin:0in 0in 12.0pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Soliciting material
pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>

<p style="font-size:10.0pt;margin:0in 0in 12.0pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</p>

<p style="font-size:10.0pt;margin:0in 0in 12.0pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))</p>

<p style="font-weight:bold;margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>


 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;"> <p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>
</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

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<div>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 8.01
&#160;Other Events</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On October 4, 2007, Steel
Dynamics, Inc. issued a press release entitled &#147;Steel Dynamics Announces
Offering of Notes.&#148;&#160; The full text of the
press release is furnished herewith and attached hereto as Exhibit 99.1.</font></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
9.01.&#160; Financial Statements and Exhibits</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Exhibits.</font></p>

<div align="center" style="font-family:Times New Roman;">

<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;">
 <tr style="page-break-inside:avoid;">
  <td width="87" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:65.0pt;">
  <p align="left" style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:left;"><!-- SET mrlHTMLTableCenter --><!-- SET mrlNoTableShading -->Exhibit Number</p>
  </td>
  <td width="27" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:20.0pt;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="506" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:379.5pt;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Description</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="87" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:65.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="27" valign="top" style="padding:0pt .7pt 0pt 0pt;width:20.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="506" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:379.5pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">A press release dated October 4, 2007 titled &#147;Steel
  Dynamics Announces Offering of Notes.&#148;</font></p>
  </td>
 </tr>
</table>

</div>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURE</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">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 hereto duly authorized.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:44.82%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --></p>
  </td>
  <td width="36%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:36.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">STEEL DYNAMICS, INC.</font></p>
  </td>
  <td width="18%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:18.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:44.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:32.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="18%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:18.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:44.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:32.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Theresa E. Wagler</font></p>
  </td>
  <td width="18%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:18.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:44.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date: October 4,
  2007</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:32.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Theresa E. Wagler</font></p>
  </td>
  <td width="18%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:18.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="44%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:44.82%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:32.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Chief Financial Officer</font></p>
  </td>
  <td width="18%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:18.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>

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<p align="right" style="margin:0in 0in 12.0pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit&nbsp;99.1</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="font-size:10.0pt;margin:0in 0in .0001pt;"><!-- SET mrlNoTableShading --><b><font size="5" style="font-size:16.0pt;font-weight:bold;">Press Release</font></b></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman"><img width="135" height="27" src="g253241kmi001.jpg"></font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">October 4, 2007</font></b></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6714 Pointe Inverness
  Way, Suite 200</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Fort Wayne, IN
  46804-7932</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">260.459.3553 Phone</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">260.969.3590 Fax</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="38%" valign="top" style="padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">www.steeldynamics.com</font></i></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="61%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in 0in;width:61.54%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in 0in;width:38.46%;">
  <p align="right" style="margin:0in 0in .0001pt 10.0pt;text-align:right;text-indent:-10.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&nbsp;</font></i></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in 6.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p style="margin:0in 0in 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Steel Dynamics Announces Offering
of Notes</font></b></p>

<p style="font-size:10.0pt;margin:0in 0in 12.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">FORT WAYNE,
INDIANA</font></i>, October 4,
2007 &#151;Steel Dynamics, Inc. (NASDAQ-GS:STLD) announced today that it plans to
sell approximately $500 million in aggregate principal amount of debt
securities in a transaction exempt from the registration requirements of the
Securities Act of 1933, subject to market and other conditions.&#160; Steel Dynamics intends to use the net
proceeds from the sale of these debt securities to finance a portion of the
planned acquisition of OmniSource Corporation.&#160;
In the event that the Company does not consummate the acquisition, SDI
will use the net proceeds to repay indebtedness outstanding under its revolving
credit facility and for other general corporate purposes.</p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This
announcement is neither an offer to sell nor a solicitation of an offer to buy
these securities.&#160; The securities will
not be registered under the Securities Act of1933, as amended, or any state
securities laws, and unless so registered, may not be offering or sold in the
United States except pursuant to an exemption from the registration
requirements of the Securities Act of 1933 and applicable state securities
laws.</font></p>

<div style="border:none;border-bottom:solid windowtext 1.5pt;padding:0in 0in 1.0pt 0in;">

<p style="border:none;font-weight:bold;margin:0in 0in 12.0pt;padding:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>

</div>

<p style="font-weight:bold;margin:0in 0in 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Contact:&#160; Fred Warner, Investor Relations Manager,
(260) 969-3564 or </font></b><font size="2" face="Times New Roman" style="font-size:10.0pt;">f.warner@steeldynamics.com</font></p>



</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

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