8-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): March 2, 2007 (March 1, 2007)

STEEL DYNAMICS, INC.

(Exact name of registrant as specified in its charter)

Indiana	0-21719	35-1929476
(State or other jurisdiction	(Commission File Number)	(IRS Employer
of incorporation)		Identification No.)

6714 Pointe Inverness Way, Suite 200, Fort Wayne, Indiana 46804

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:  260-459-3553

Not Applicable

(Former name or former address, if changed since last report)

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:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01.  Regulation FD Disclosure.

On March 1, 2007, Steel Dynamics, Inc. issued the following press releases:

1. “Steel Dynamics Announces Engineered Bar Mill Investment,” announcing the plans to increase capacity at one of its steel manufacturing facilities for an investment of approximately $35 million during 2007.  The full text of the press release is furnished herewith and attached hereto as Exhibit 99.1.

2.“Steel Dynamics Board Approves New Mesabi Nugget Initiative,” announcing the approval of its board of directors to construct and operate a $235 million iron-making facility in participation with Kobe Steel.  The full text of the press release is furnished herewith and attached hereto as Exhibit 99.2.

Item 9.01.  Financial Statements and Exhibits

( c )         Exhibits.

Exhibit Number	Description
99.1	A press release dated March 1, 2007 titled “Steel Dynamics Announces Engineered Bar Mill Investment.”
99.2	A press release dated March 1, 2007 titled “Steel Dynamics Board Approves New Mesabi Nugget Initiative.”

SIGNATURE

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.

		STEEL DYNAMICS, INC.
Date: March 2, 2007	By:	/s/ Gary Heasley
		Gary Heasley
	Title: Vice President & Chief Financial Officer

EX-99.1

Exhibit 99.1

Press Release March 1, 2007	6714 Pointe Inverness Way, Suite 200 Fort Wayne, IN 46804-7932 260.459.3553 Phone 260.969.3590 Fax www.steeldynamics.com

Steel Dynamics Announces Engineered Bar Mill Investment

FORT WAYNE, INDIANA, March 1, 2007 —Steel Dynamics, Inc. (NASDAQ-GS:STLD) today announced that its Board of Directors has approved an investment of $35 million at its Pittsboro, Indiana, Engineered Bar Products Division designed to increase the mill’s production capacity. The planned modifications to the mill are expected to increase its annual production capacity for special-bar-quality (SBQ) steels from the current 500,000 tons per year to about 725,000 tons per year.

The changes to the mill will include EAF-furnace and caster modifications of roughly $10 million and rolling-mill and reheat-furnace upgrades totaling about $25 million. The schedule calls for the bulk of investment to be completed in 2007. The mill’s principal products will continue to be SBQ round bars in a range of one inch to 9 inches in diameter.

Production volume has grown rapidly at the Pittsboro mill since the January 2004 restart of this mill which Steel Dynamics acquired out of bankruptcy. The addition of an on-site bar-processing and finishing facility in 2006 has opened up new customer opportunities for the mill, enhanced customer relationships, and allowed SDI to enter new market segments for SBQ products.

In 2006 the mill shipped 502,000 tons, supplying high-quality carbon- and alloy-steel to a variety of customers, including those in the heavy machinery, agriculture, transportation, and energy industries. Caterpillar, Inc. recently awarded a 2006 Quality Excellence Award to the Engineered Bar division for providing defect-free SBQ steel to Caterpillar N.A. in 2006.

Forward Looking Statements

This press release contains predictive statements about future events, including investments in additional production capacity at the company’s facilities and the successful operation of those facilities after the investments are made. These statements are intended to be made as “forward-looking,” subject to many risks and uncertainties, within the safe harbor protections of the Private Securities Litigation Reform Act of 1995. Such predictive statements are not guarantees of future performance, and actual results could differ materially from our current expectations.

We refer you to SDI’s detailed explanation of the many factors and risks that may cause such predictive statements to turn out differently, as set forth in our most recent Annual Report on Form 10-K and in other reports which we from time to time file with the Securities and Exchange Commission, available publicly on the SEC’s Web site, www.sec.gov and on the company’s Web site, www.steeldynamics.com.

Contact:  Fred Warner, Investor Relations Manager, (260) 969-3564 or f.warner@steeldynamics.com

EX-99.2

Exhibit 99.2

Press Release

March 1, 2007

6714 Pointe Inverness Way, Suite 200
Fort Wayne, IN 46804-7932
260.459.3553 Phone
260.969.3590 Fax
www.steeldynamics.com

Steel Dynamics Board Approves New Mesabi Nugget Initiative

FORT WAYNE, INDIANA, March 1, 2007 —Steel Dynamics, Inc. (NASDAQ-GS:STLD) announced today that its Board of Directors has approved the company’s participation with Kobe Steel to construct and operate a $235-million iron-making facility in the Hoyt Lakes region of Minnesota. Proceeding with the project is contingent on successfully arranging financing of the project, including discussions regarding economic development assistance with the State of Minnesota, completion of a long-term supply agreement that would assure the supply of iron concentrate needed for iron-nugget production, securing certain land options, and other unresolved issues.

In November 2006, SDI announced that negotiations with four other partners in Mesabi Nugget, LLC, had broken down due to complexities involved in the multi-party arrangement. Kobe Steel and Steel Dynamics have now formed a new legal entity to develop the project.

The new arrangement calls for Steel Dynamics to hold a majority stake in the project and to be responsible for the construction and operation of the facility. Kobe will provide a technology license, engineering services, proprietary equipment and technical support to the project. The initial production module is designed to have an annual production capacity of 500,000 tonnes of iron nuggets and will utilize the ITmk3 nugget technology pioneered by Kobe Steel. Additional production modules may be built following successful operation of the first module.

Steel Dynamics anticipates that substantially all of the nugget output of the first module will be consumed in SDI’s mini-mills, providing the company with a constant supply of high-quality iron units. Melt tests using nuggets produced by a pilot plant have demonstrated that iron nuggets melt more efficiently in electric-arc furnaces than traditional pig iron.

Forward Looking Statements

This press release contains predictive statements about future events, including Steel Dynamics’ successfully concluding financing and other negotiations related to a new venture, investment and participation in the management of the new venture, and the planned start-up and operation of this new business, including successfully applying technology to produce the product in anticipated volumes. These statements are intended to be made as “forward-looking,” subject to many risks and uncertainties, within the safe harbor protections of the Private Securities Litigation Reform Act of 1995. Such predictive statements are not guarantees of future performance, and actual results could differ materially from our current expectations.

We refer you to SDI’s detailed explanation of the many factors and risks that may cause such predictive statements to turn out differently, as set forth in our most recent Annual Report on Form 10-K and in other reports which we from time to time file with the Securities and Exchange Commission, available publicly on the SEC’s Web site, www.sec.gov and on the company’s Web site, www.steeldynamics.com.

Contact:  Mark Millett, Vice President & General Manager, Flat Roll Division (260) 868-8000