Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Continuous
- Room-and-pillar
|
Production Start | ... |
Mine Life | 2026 |
The Viper mining complex consists of one underground coal mine and a preparation plant. |
Source:
p. 1
Contractors
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Summary:
Mining operations extract thermal coal from the Illinois No. 5 seam, also referred to as the Springfield seam.
Depth: 275 ft
Thickness: 5.75 ft
Mining Methods
- Continuous
- Room-and-pillar
Summary:
Room and pillar mining is effective for small blocks of thin coal seams. In room and pillar mining, a network of rooms is cut into the coal seam, leaving a series of pillars of coal to support the roof of the mine. Continuous miners are used to cut the coal and shuttle cars are used to transport the coal to a conveyor belt for further transportation to the surface. The pillars generated as part of this mining method can constitute up to 40% of the total coal in a seam. Higher seam recovery rates can be achieved if retreat mining is used. In retreat mining, coal is mined from the pillars as workers retreat. As retreat mining occurs, the roof is allowed to collapse in a controlled fashion.
Source:
Summary:
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Reserves at December 31, 2019:
Category | Tonnage | Commodity |
Proven & Probable
|
40.4 M tons
|
Coal (thermal)
|
Financials:
| Units | 2019 | 2018 | 2017 |
Book Value
|
M USD
|
......
|
31.7
|
25
|
Heavy Mobile Equipment as of December 31, 2022:
HME Type | Quantity |
Continuous Miner
|
.......................
|
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Corporate Filings & Presentations:
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