United States

Leer Mine

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Mine TypeUnderground
  • Coal (metallurgical)
Mining Method
  • Longwall
  • Continuous
  • Room-and-pillar
Production Start... Lock
Mine Life2042
ShapshotLeer 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.


Arch Resources, Inc. 100 % Indirect
ICG Tygart Valley, LLC (operator) 100 % Direct
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.



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Deposit type

  • Sedimentary


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.



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Mining Methods


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Crushers and Mills

Milling equipment has not been reported.



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Coal (metallurgical) M tons 00000000003.53.2
All production numbers are expressed as clean coal.

Operational metrics

Hourly processing capacity 000000000000
Hourly processing rate 0000
Annual production capacity

Production Costs

Commodity production costs have not been reported.


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Heavy Mobile Equipment


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Mine Management

Source Source
Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 16, 2024

Total WorkforceYear
Subscription required 2023
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Aerial view:


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