On June 15, 2011, Arch acquired International Coal Group (ICG) and cemented its place as a top five global coal supplier and a top 10 metallurgical coal producer and marketer.
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In October 2009, Arch acquired Rio Tinto's Jacobs Ranch mine and blended it with Black Thunder Coal Mine in the southern Powder River Basin of Wyoming, creating the single largest coal mining complex in the world.
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