Twentymile Coal Mine, CO, USA
Key Data:
Producer of
Steam coal
Location
Colorado, USA
Ownership
Peabody Energy (100%)
Geology type
Upper Cretaceous coal measures
Mineral type
Low-sulphur, low-ash bituminous coal
Reserve base
100Mt-plus in current mine plan area
Annual production
8.7Mt (2005)
Mining method
Single longwall unit with supporting continuous miner development sections
Processing method
Crushing and screening run-of-mine coal before shipment; minor washing to produce industrial-grade products
Employment
320
Key Equipment:
Underground
Long-Airdox Electra 3000 shearer
Deutsche Bergbau Technik face supports, armoured face conveyor, stage loader and crusher
Joy continuous miners and shuttle cars
Stamler feeder-breakers
Fletcher rockbolting rigs
Continental Conveyor belt conveyors
Transport
Union Pacific Railroad
