TORONTO, ONTARIO and LUXEMBOURG, LUXEMBOURG--(Marketwire - March 25, 2011) - ArcelorMittal, Nunavut Iron Ore Acquisition Inc. and Baffinland Iron Mines Corporation ("Baffinland") today announced the completion by Baffinland and 1843208 Ontario Inc. ("Acquireco"), a corporation owned as to 70% by ArcelorMittal…