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Black Thunder Thermal Coal Mine, Wyoming

Producer of

Steam coal


70km south of Gillette, Wyoming, USA


Arch Coal Inc.

Geology type

Palaeocene (Early Tertiary) coal measures

Mineral type

Sub-bituminous coal

Reserve base


Annual production

56.8Mt (2003), currently producing at a rate of 91Mt/y



Bucyrus-Erie 2570WS, 1570W and 1300W walking draglines

P&H 2800 mining shovels

Marion (now B-E) 351M mining shovel

Liebherr T-262, TI-272 and T-282 haul trucks

Komatsu 930E haul trucks

Tamrock Driltech blasthole drills

Caterpillar and Komatsu dozers

Caterpillar and Komatsu wheel loaders

Caterpillar 16G road graders

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