Mittal Steel Company N.V. announced today that the required waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 with respect to Mittal’s bid to acquire Arcelor expired at 11:59 p.m. on May 11, 2006. The Department of Justice has not issued a request for additional information and documentary material (“second request”) in connection with the Transaction.

The Department’s investigation is continuing with respect to one area of overlap between the companies’ operations in North America. Mittal Steel and the Department have agreed that, if the Department were to conclude that a remedy is necessary to resolve a competitive concern in this area, Mittal Steel’s proposed sale of Dofasco, Inc., in accordance with its January 26 agreement with ThyssenKrupp, would satisfy the Department’s concerns. Mittal Steel remains committed to divesting Dofasco to ThyssenKrupp pursuant to the January 26 agreement.

If Mittal Steel is unable to sell Dofasco to ThyssenKrupp due to Arcelor’s transfer of its Dofasco shares to the S3 Stichting, Mittal may instead resolve any competitive concern by selling an alternative asset. Mittal Steel believes that a divestiture of the alternative asset would have no adverse effect on Mittal Steel’s sales or operations, particularly in light of the related retention of Dofasco.


Resultaten,
Rotterdam, May 12, 2006 - Mittal Steel Company N.V. ("Mittal Steel" or "the Company"), the world's largest and most global steel company, today announced
results for the three months ended March 31, 2006.

Highlights:
o Strong results higher than guidance-reflecting an improved operating environment
o EPS up 15% from Q405
o Operating income in Q106 up 17% from Q405
o In Q206, we expect operating income to increase at a rate higher than the Q106/Q405 increase o Operating conditions expected to further improve in Q306