Exhibit 99.1

Press Release
June 19, 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 Increased Revolving Credit Facility

FORT WAYNE, INDIANA, June 19, 2007 — Steel Dynamics, Inc. — (NASDAQ/GS: STLD) announced today that it has amended, restated and expanded its senior secured revolving credit facility from the prior $350 million level  to a renewed 5-year $750 million facility.  Subject to certain conditions, Steel Dynamics also has the opportunity to increase the facility size by an additional $350 million.  The amended facility is guaranteed by certain of Steel Dynamics subsidiaries and is secured by substantially all of its accounts receivable and inventories.  The proceeds from the revolver will be available to fund working capital, capital expenditures, acquisitions, share repurchases and other general corporate purposes.

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