Webcast Alert: Steel Dynamics Announces Q2 2010 Conference Call Webcast

FORT WAYNE, Ind., July 13 /PRNewswire-FirstCall/ — Steel Dynamics, Inc.
(Nasdaq: STLD) announces the following Webcast:

Steel Dynamics, Inc. Second Quarter 2010
What: Conference Call Webcast

When: July 20, 2010 @ 10:00 am Eastern

http://www.videonewswire.com/

Where: event.asp?id=70701

Live over the Internet –Simply log on to
How: the web at the address above.

Fred Warner, Investor Relations Manager
Contact: 260-969-3564.

If you are unable to participate during the live webcast, the call will be
archived on the Web site www.steeldynamics.com.

Steel Dynamics is a growing mini-mill steelmaker and metals recycler based in
Fort Wayne, Indiana. In 2009 SDI joined the Fortune 500 list of top U.S.
industrial companies, ranked at No. 318, and listed No. 3 in terms of 5-year
revenue growth. Net sales for 2009 were $4.0 billion. These results include
OmniSource Corporation, a metals recycling company acquired in 2007.

SDI operates five electric-furnace mini-mills producing a wide range of carbon
steel products. Flat-rolled steel, SDI’s original steel product, accounted for
67 percent of the company’s steel shipments in 2009, the remainder being “long
products” (bars and beams). The company employs state-of-the-art technology in
its modern, automated steelmaking operations, and achieves high productivity by
rewarding employees with incentive-based compensation, stock options, and other
benefits. SDI is among the most profitable American steel companies in terms of
profit margins and operating profit per ton. In 2009 Steel Dynamics shipped 4.0
million tons of steel and has a production capacity of 7.3 million tons per
year.

Upon acquiring OmniSource Corporation, Steel Dynamics became one of the nation’s
largest scrap metals processors. Fort Wayne-based OmniSource operates scrap
collection and processing facilities at more than 70 locations across the
eastern U.S., including shredders operating at 11 sites, and has become a major
ferrous scrap supplier to SDI’s Indiana steel mills.

SOURCE Steel Dynamics, Inc.