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United States
Antelope Mine

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 Location:
104 km NE from Casper, Wyoming, United States

  Regional Office:
P.O. Box 3008
Gillette
Wyoming, United States
82717
Phone  ...  Subscription required
Fax(307)-464-2588
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
Production Start...
Mine Life14.2 years (as of Jan 1, 2020)


Owners

Source: p. 1
CompanyInterestOwnership
Navajo Transitional Energy Company, LLC (operator) 100 % Indirect
Antelope Coal LLC., a subsidiary of Navajo Transitional Energy Corp (NTEC), operates the Antelope Mine.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The mine extracts thermal coal from the Anderson and Canyon Seams, with up to 44 and 36 feet, respectively, in thickness.

General Geology and Coal Resources
Stratigraphic units include, in descending order, recent (Holocene age) alluvial and eolian deposits, the Eocene age Wasatch Formation (the overburden), and the Paleocene age Fort Union Formation (which contains the target coal beds). [Dec 2008, Final Environmental Impact Statement, p. 118-120]

Surficial deposits within the general analysis area include alluvial and eolian deposits, clinker, and weathered Wasatch and Fort Union Formations. Although clinker is present in the general analysis area, the tract has no appreciable amounts of clinker. There are thin alluvial deposits along ephemeral streams. These alluvial deposits typically consist primarily of poorly to well-sorted, irregularly bedded to laminated, unconsolidated sand, silt, and clay with minor intervals of fine gravel. The valley floors of Horse Creek, Spring Creek and Antelope Creek contain appreciable amounts of alluvium both in width and depth. The alluvial deposits in Horse Creek, Spring Creek and Antelope Creek contain much more coarse-grained material (sands and gravels) than the ephemeral tributaries that drain most of the general analysis area. [Dec 2008, Final Environmental Impact Statement, p. 118-120]

The Eocene Wasatch Formation forms most of the overburden overlying the mineable coal seams in the genera ........


Mining Methods

  • Truck & Shovel / Loader
  • Dragline


Summary:

The Antelope Mine is located in the southern end of the PRB approximately 60 miles south of Gillette, Wyoming. The mine extracts thermal coal from the Anderson and Canyon Seams, with up to 44 and 36 feet, respectively, in thickness. Significant areas of unleased coal north and west of the mine are available for nomination by us or other mining operations or persons. Based on the average sulfur content of 0.50 lbs SO2/mmBtu, the reserves at our Antelope Mine are considered to be compliance coal under the Clean Air Act, and this coal is some of the lowest sulfur coal produced in the PRB.

Coal at the Antelope Mine is mined using conventional surface-mining methods and shipped from an onsite railroad loading facility to electric utilities and industrial customers in the U.S. Antelope Mine uses a truck and shovel and dragline mining method.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Coal (thermal) tons  ......  Subscription required  ......  Subscription required  ......  Subscription required23,155,74228,503,50429,793,25735,181,059
Heat ContentBTU/lb8,8678,8648,851
Sulfur%0.240.230.24
All production numbers are expressed as ROM coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Coal tonnes mined  ......  Subscription required  ......  Subscription required23,243,371 tons of ROM coal23,155,742 tons of ROM coal28,503,504 tons of ROM coal29,793,257 tons of ROM coal
Subscription required - Subscription is required.

Reserves at May 1, 2020:

CategoryTonnage CommodityMarketable Coal
Proven & Probable 453 M tons Coal (thermal) 424.1 Mt


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of December 31, 2017:
HME TypeModelQuantity
Dozer ....................... Subscription required
Dragline ....................... Subscription required
Drill ....................... Subscription required
Excavator ....................... Subscription required
Shovel ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 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 2020
................................... Subscription required 2019
Corporate Presentation 2018
Other 2018
Other 2018
Form 10-K 2017
Other 2017
Form 10-K 2016
Other 2016
Corporate Presentation 2015
Form 10-K 2015
Other 2015
Other 2014
Environmental Assessment 2008
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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