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United States
Leer Mine

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 Location:
32.2 km S from Morgantown, West Virginia, United States

  Address:
1200 Tygart Drive
Grafton
West Virginia, United States
26354
Phone  ...  Subscription required
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Coal (metallurgical)
Mining Method
  • Longwall
  • Continuous
  • Room-and-pillar
Production Start...
Mine Life2035


Owners

Source: p. 60
CompanyInterestOwnership
Arch Resources, Inc. 100 % Indirect
ICG Tygart Valley, LLC (operator) 100 % Direct
ICG Tygart Valley, LLC is an indirect subsidiary of Arch Coal, Inc.

Contractors

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Deposit Type

  • Sedimentary


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 Monongahela Group strata is not present on the Leer Mine Property due to the lower elevations of the property. The strata present on the property consists of the Conemaugh Group and the Allegheny Formation. The Conemaugh Group coal seams consist of the Harlem, Bakerstown, and Brush Creek. All coal seams of the Conemaugh Group are thin and discontinuous. The Allegheny Formation coal seams consist of the Upper and Lower Freeport, Upper and Lower Kittanning, and Clarion. The Upper and Lower Freeport, Upper Kittanning and Clarion coal seams are discontinuous and of limited extent on the Leer Mine Property.

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. 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 an ........


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 ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Coal (metallurgical) M tons  ......  Subscription required  ......  Subscription required  ......  Subscription required3.53.24.12.9
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20152014
Annual production capacity 3.5 M tons of clean coal3.5 M tons of clean coal

Reserves at December 31, 2021:

CategoryTonnage Commodity
Proven 18.1 M tons Coal (metallurgical)
Probable 26.3 M tons Coal (metallurgical)
Proven & Probable 44.4 M tons Coal (metallurgical)
Measured 2.4 M tons Coal (metallurgical)
Indicated 11.6 M tons Coal (metallurgical)
Measured & Indicated 14 M tons Coal (metallurgical)
Inferred 4.9 M tons Coal (metallurgical)


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelQuantity
Bolter ....................... Subscription required ....................... Subscription required
Continuous Miner ....................... Subscription required ....................... Subscription required
Feeder Breaker ....................... Subscription required
Scoop Tram ....................... Subscription required
Shearer ....................... Subscription required ....................... Subscription required
Shuttle car ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 19, 2022
....................... Subscription required ....................... Subscription required Subscription required May 19, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Form 10-K 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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