ISG ING Groep NV

International Steel Group Announces Operating Interruption at Riverdale Facility RICHFIELD, Ohio, June 25 /PRNewswire-FirstCall/ -- International Steel Group Inc. (NYSE:ISG) announced today that its ISG Riverdale, Inc. subsidiary in Illinois experienced an unscheduled outage at its Basic Oxygen Furnace (BOF) on Thursday. The outage resulted from the failure of a portion of the base of the cooling tower section of the BOF off-gas cooling system. No one was injured in the incident. While the Company is still assessing the damage to the cooling tower, it expects to make the necessary repairs as soon as possible so that operations can resume within 14 days. In the meantime, the Company is immediately reallocating orders where possible to ensure that customer service is not interrupted, and that all hot metal previously shipped to Riverdale will be consumed. ISG does not expect this outage to have a significant effect on its second-quarter financial results. About International Steel Group Inc. International Steel Group Inc. is the largest integrated steel producer in North America, based on steel making capacity. The Company has the capacity to cast approximately 21 million tons of steel products annually. It ships a variety of steel products from 12 major steel producing and finishing facilities in seven states, including hot-rolled, cold-rolled and coated sheets, tin mill products, carbon and alloy plates, rail products and semi- finished shapes serving 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 Prospectus filed on December 12, 2003, and in the Company's subsequent periodic filings with the Securities and Exchange Commission. DATASOURCE: International Steel Group Inc. CONTACT: Brian Kurtz, Vice President, Finance & Treasurer of International Steel Group Inc., +1-330-659-9100 Web Site: http://www.intlsteel.com/

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