The Omarska mine is operated by ArcelorMittal Prijedor. ArcelorMittal Prijedor was founded in 2004 as a partnership between ArcelorMittal (at the time LNM Holdings) with a 51% controlling interest and local mining company Iron Ore Mine Ljubija owning the remaining 49% stake. ArcelorMittal Prijedor is a captive mine of the Europe segment and supplies all of its iron ore production to the ArcelorMittal Zenica steel plant.

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