ISG Restarts 110-Inch Plate Mill at Burns Harbor

ISG Restarts 110-Inch Plate Mill at Burns Harbor 


RICHFIELD, Ohio, April 6  /PRNewswire-FirstCall/ -- International Steel Group
Inc. (NYSE:ISG) today announced the successful restart of its 110-inch plate
mill, located at the company's Burns Harbor facility in Burns Harbor, Ind.  ISG
announced plans to restart the operation in December 2004 and has since hired
and trained 65 new employees to operate the facility.

"We couldn't be more pleased with the successful restart of this facility,"
said Thomas J. Cera, vice president - ISG Plate Operations. "Our decision to
return this mill to operation was driven by increasing demand from our existing
customers and our desire to quickly respond to their needs."

The mill makes steel plate for a wide range of industries, including rail,
construction, shipbuilding, oil and gas exploration and production, and
machinery.  The ISG Plate Division also is a major supplier of armored plate
products that are used to protect the U.S. Armed Forces.

"Today marks a great day in the history of Burns Harbor Plate," added Lawrence
Fabina, general manager-ISG Burns Harbor Plate.  "With much anticipation, the
restart of this operation has meant a great deal to both our new and
experienced employees who are happy to service the growing needs of our valued
customers."

About International Steel Group Inc.

International Steel Group Inc. is one of the largest steel producers in North
America.  It produces a variety of steel products including hot-rolled,
cold-rolled and coated sheets, tin mill products, carbon and alloy plates, rail
products and semi-finished shapes to serve the automotive, construction, pipe
and tube, appliance, container and machinery markets.  For additional
information on ISG, visit http://www.intlsteel.com/ .

Forward-Looking Statements

Statements in this release that are not historical facts, including statements
accompanied by words such as "will," "believe," "expect," "estimate," or
similar terms, are forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995.  Forward- looking statements involve
risks and uncertainties that may cause actual results or events to differ
materially from those expressed or implied in such statements.  These
statements contain time-sensitive information that reflects management's best
analysis only as of the date of this release.  ISG does not undertake any
ongoing obligation, other than that imposed by law, to publicly update or
revise any forward-looking statements to reflect future events, information or
circumstances that arise after the date of this release. Factors that may cause
actual results and performance to differ materially from those in the
forward-looking statements include, but are not limited to, negative overall
economic conditions or conditions in the markets served; competition within the
steel industry; changes in U.S. or foreign trade policy affecting steel imports
or exports; changes in foreign currencies affecting the strength of the U.S.
dollar; actions by domestic and foreign competitors; the inability to achieve
the Company's anticipated growth objectives; changes in availability or cost of
raw materials, energy or other supplies; labor issues affecting the Company's
workforce or the steel industry generally; and the inability to implement the
Company's operating culture and philosophy at acquired facilities.  Further
information concerning issues that could materially affect financial
performance related to forward-looking statements can be found in ISG's filings
with the Securities and Exchange Commission.

Additional Information and Where to Find It

Mittal Steel has filed with the Securities and Exchange Commission a
registration statement on Form F-4 that includes a preliminary proxy statement
of ISG and a preliminary prospectus of Mittal Steel and other relevant
documents in connection with the proposed merger involving Mittal Steel and
ISG.  In addition, Mittal Steel will publish and make available to shareholders
of Mittal Steel, and file with Euronext Amsterdam N.V., a prospectus and
shareholders circular.  Investors and security holders are urged to carefully
read the definitive prospectus regarding the proposed merger when it becomes
available because it will contain important information and to exclusively base
their investment decision on this definitive prospectus once available. 
Investors and security holders of Mittal Steel and ISG are urged to read the
definitive proxy statement and prospectuses and other relevant materials when
they become available because they will contain important information about
Mittal Steel and ISG and the proposed merger. Investors and security holders
may obtain a free copy of these materials (when they are available) and other
documents filed with the Securities and Exchange Commission at the SEC's
website at http://www.sec.gov/ .  Mittal Steel and ISG and their respective
executive officers and directors may be deemed to be participants in the
solicitation of proxies from the ISG stockholders with respect to the proposed
merger.  Information regarding the interests of these officers and directors in
the proposed merger is included in the preliminary proxy statement/prospectus
contained in the above-referenced registration statement on Form F-4 initially
filed with the SEC on December 14, 2004, as amended.  You may obtain documents
filed with the SEC by Mittal Steel free of charge if you request them in
writing from Mittal Steel Company N.V., 15th Floor, Hofplein 20, 3032 AC
Rotterdam, The Netherlands, or by telephone at [phone].  You may also
obtain documents filed with the SEC by ISG free of charge if you request them
in writing from Investor Relations, International Steel Group Inc., 4020
Kinross Lakes Parkway, Richfield, Ohio 44286-9000, or by telephone at (330)
659-7430. 

DATASOURCE: International Steel Group Inc.



CONTACT:  Investors, Blaise E. Derrico, Manager, Investor Relations,

[phone], or Media, Jolice A. Pojeta, Communications Manager - Western

Region, [phone], or [phone], or Charles T. Glazer, Manager,

Communications and Public Relations, [phone], all of International

Steel Group Inc.



Web site:  http://www.intlsteel.com/ 

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