Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
|
Processing |
- Spiral concentrator / separator
- Flotation
- Dense media separation
|
Source:
p. 1
Summary:
Coal mined from the Upper Kittanning coal and Upper Freeport seam.
Summary:
Rosebud Mining, controlled by J. Clifford Forrest, is the third largest operator of deep mines in Pennsylvania and the largest operator of just room-and-pillar deep mines (excluding longwall operations).
Processing
- Spiral concentrator / separator
- Flotation
- Dense media separation
Source:
Summary:
Rosebud Mining commissioned the Crooked Creek prep plant in Pennsylvania earlier this year. The heavy-media plant has a raw feed capacity of 400 tons per hour. The plant uses a heavy-media cyclone, forth flotation and spirals to produce a low-sulfur product with 7.5%-8.5% ash. The PLC-controlled plant employs centrifugal dryers and an ash analyzer.
The Crooked Creek prep plant main sources include Crushers, Screens, Conveyors, Radial Stackers, Front-end Loaders, Roadways, Coal Stockpiles, Rail load-out facilities, and Emergency Diesel Engine. Emission controls include water sprays, enclosures, and work practice standards.
Mine Crooked Creek Preparation Plant as at 2020:
- Raw feed - 400 ton-per-hour
- Product Ash % - 7.50%-8.50%
- Quality - < 1.2 (low sulfur)
- Type of plant - Heavy Media
- Primary Separ. - HM Cyclones
- Fine Coal - Froth and Spiral
- Centrifugal Dryer
- Controls - Programmable logic controller
Production:
Commodity | Units | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Coal (metallurgical)
|
tons
| ......  | ......  | 704,415 | 529,823 | 126,665 | 136,744 |
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Aerial view:
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