SACILOR, a Lorraine group founded in 1973, merges with the steel group USINOR in 1986 to become the USINOR-SACILOR gorupe.

In 1997, Usinor-Sacilor again became Usinor. In 2002, Usinor merged with the Spanish Aceralia and the Luxembourger Arbed to form the European group Arcelor.

This group disappeared in 2006, when Mittal Steel Company launched a takeover bid for Arcelor which resulted in a merger of the two groups in June 2006 to form ArcelorMittal.

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