KINGSPORT, Tenn., Oct. 13, 2016 /PRNewswire/ -- Alpha Natural Resources Holdings, Inc. and ANR, Inc., along with their affiliate Enterprise Mining Corporation, LLC, announce the divestment of substantially all of the assets of the Enterprise mining operations in eastern Kentucky to Kingdom Coal, a subsidiary of Keystone-Kingdom Resources, based in Fort Worth, Texas. The sale includes the EMC #9A mine and the Roxana
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