Twentymile Mine
Owner
Mine Contact
Pat Sollars, Mine Manager
Twentymile Coal Company
29515 Routt County Road #27
Oak Creek, CO 80467
(970) 879-3800
Location
Oak Creek, Colorado, 16 miles southwest of Steamboat Springs in Routt County.
Rail Loading Point
Energy, Colorado
Mine Background
Twentymile's Foidel Creek mine began operation in 1983. A new state-of-the-art longwall system was installed in 1996, and a sophisticated batch-weigh loading system was also completed that year. This union-free mine produces high-Btu, low-sulphur steam and stoker coals for both utility and industrial customers.
Mine Type
Underground longwall
Recoverable Reserves
80 million tons
Annual Production (2001)
7,500,000 tons
Current Annual Production Capacity
8.5-9.0 million tons
Rail Loading Point Storage Capacity
One million plus tons
Loadout Description and/or Configuration
Batch weigh loadout with open stockpile feed.
Weighing System
Batch weigh bin and coupled-in-motion track scale.
System Used to Assure Maximum Loading per Car
Batch system
Loading Rate per Hour
5,500 tons, 115-car unit train within three hours.
Load Track Configuration and Capacity
Single-ended loading track with adjacent run-around capable of handling two 115-car trains.
Loading Mode
Downgrade coupled load in motion with train in buff against locomotive.
Maximum Cars per Train
115 cars
Washing Capability
Partial
Coal Specifications
Steam Bituminous: 11,350 Btu/lb., 0.50% Sulphur
Stoker Bituminous: 11,400 Btu/lb, 0.41% Sulphur
| Composition analysis (%) | |
| Steam Coal as Received: | |
| Moisture | 9.5 |
| Ash | 9.8 |
| Volatile Matter | 36.0 |
| Fixed Carbon | 44.5 |
| Ultimate Analysis (%) | |
| Steam Coal (dry): | |
| Ash | 10.8 |
| Carbon | 71.1 |
| Hydrogen | 4.9 |
| Oxygen | 11.4 |
| Sulphur | 0.55 |
| Chlorine | 0.01 |
| Fusion Temperature of ash (°F) | |
| Steam : | |
| Softening (H=W) | 2,580 |
| Other characteristics | ||
| Steam | Stoker | |
| Hardgrove Grindability Index | 45 | 46 |
| Sizing | 2"x0" | 1 1/4" x 1/4" |