Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Longwall
- Continuous
- Room-and-pillar
|
Production Start | ... |
Mine Life | 2042 |
Leer and Leer South longwall mines anchor of Arch Resources large-scale, first quartile metallurgical franchise. The Leer franchise consistently ranks among the lowest cost U.S. metallurgical mines and produces a product quality that is recognized and sought-after worldwide. |
Source:
p. 61,474
Arch Resources, Inc. 100% owns the Leer mine.
ICG Tygart Valley, LLC, an indirect wholly owned subsidiary of Arch Coal, Inc., operates the Leer mine.
Contractors
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Summary:
The Leer Mine reserve is a relatively flat lying, sedimentary deposit of Pennsylvanian Age. The Leer Mine is actively mining a single coal seam, the Lower Kittanning.
The principal minable coal seam on the Leer Mine Property is the Lower Kittanning Seam. The Lower Kittanning Seam occurs in a larger area, with a higher seam thickness than all other listed seams in the formation. The Leer Mine is actively mining the Lower Kittanning Seam. The Lower Kittanning Seam reserve extends northeast from Grafton, West Virginia toward Thornton, West Virginia. The reserve area is approximately 6.5 miles in length and approximately 4.0 miles wide. The Lower Kittanning Seam consists primarily of a single horizon of coal with a bone coal parting. Drillholes show seam thickness ranging from 0.0 to 10.5 feet. The seam thins (< 3.0 feet) to the south and east of the Leer Mine LOM Plan and to the north and east of the northern extension of the Leer Mine LOM Plan.
The mineable coal seam is typically low-ash, high thermal content, high volatile A rank bituminous metallurgical coal product. Parting does occur within the property and generally is between one and three feet thick. The parting does not affect the end product since the coal is washed. The seam is generally continuous but is absent in areas outside the Leer Mine LOM Plan. These sub-crops of the Lower Kittanning seam are usually from sandstone washouts.
Mining Methods
- Longwall
- Continuous
- Room-and-pillar
Summary:
The Leer Mine is a permitted underground longwall mine that extract coal from Lower Kittanning Seam and parting interval within the seam utilizing continuous miners to develop longwall panels to be mined using a longwall mining system.
There are six openings to the surface from the Leer Mine. These openings consist of the slope, dual intake and elevator shaft, return shaft, two bleeder shafts (District 5 and Sharp), and the Hardesty intake shaft.
Currently, there are three longwall development (gate road) continuous miner sections and one continuous miner supersection developing mains and production panels.
Projected continuous miner productivity is 105 feet per shift for gate road development and 144 feet per shift for the continuous miner supersections. Supersections are continuous miner sections with split ventilation that allows two continuous miners to operate simultaneously. Longwall projected productivity is typically 52 feet of retreat per day (26 feet per shift).
The longwall and continuous miner production crews work nine-hour shifts, two shifts per day, with hot seat change at the section face. A third shift per day for the longwall and continuous miner units is utilized for maintenance. Each continuous miner crew works a fiveand one-half day schedule (every other Saturday). There are four longwall crews that work a five days on, three days off schedule, rotating shifts every six weeks to provide longwall production seve ........
Source:
Summary:
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Source:
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Reserves at December 31, 2023:
Category | Tonnage | Commodity | Marketable Coal |
Proven
|
M tons
|
Coal (metallurgical)
|
11.4 M tons
|
Probable
|
M tons
|
Coal (metallurgical)
|
24.7 M tons
|
Proven & Probable
|
M tons
|
Coal (metallurgical)
|
36.1 M tons
|
Measured
|
2.6 M tons
|
Coal (metallurgical)
|
|
Indicated
|
12.6 M tons
|
Coal (metallurgical)
|
|
Measured & Indicated
|
15.2 M tons
|
Coal (metallurgical)
|
|
Inferred
|
4.9 M tons
|
Coal (metallurgical)
|
|
Financials:
| Units | 2023 | 2022 | 2021 | 2020 | 2019 |
Book Value
|
M USD
| ...... | ...... | ...... | ...... |
......
|
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HME Type | Model | Quantity | Ref. Date | Source |
Bolter
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Dec 31, 2021
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p.251
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Continuous Miner
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Dec 31, 2021
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p.251
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Feeder Breaker
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Dec 31, 2021
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p.251
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Scoop Tram
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Dec 31, 2021
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p.251
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Shearer
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Jan 1, 2024
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p.29
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Shuttle car
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Dec 31, 2021
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p.251
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- Subscription is required.
- Subscription is required.