Cordero Mine


Cloud Peak Energy


30 miles south of Gillette, Wyoming

Rail Loading Point

Cordero, Wyoming (Campbell County)

Mine Type

Surface dragline operation

Recoverable Reserves

350 million tons

Annual Production

1995--14.6 million tons
1996--13.0 million tons

Current Annual Production Capacity

Permitted for 24 million tons

Rail Loading Point Storage Capacity

144,000 tons (slot storage)

Loadout Description and/or Configuration

Flood loading. Two trains can be loaded simultaneously.

Weighing System

Weigh-in-motion track scales.

Loading Rate per Hour

20,000 tons (10,000 tons per hour per loop)

Storage Recharge Rate

5,000 tons per hour

Load Track Configuration and Capacity

Two loop tracks capable of holding four unit trains on site.

Coal Specifications

Sub-bituminous, 8,350 Btu/lb., 0.37% Sulphur

proximate analysis (%) 
Typical as Received:
Moisture 30.25
Ash 5.70
Volatile Matter 31.99
Fixed Carbon 31.69
Fusion Temperature of Ash (°F) 
Reducing atmosphere:
Initial 2,120
Fluid 2,170
Other Characteristics
Sodium as % of Ash 1.31
Size 2" x 0"