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United States
Dry Fork Mine

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 Location:
10 km NW from Gillette, Wyoming, United States

  Address:
2201 S. Douglas Highway, #130
P.O. Box 1809
Gillette
Wyoming, United States
82717
Phone  ...  Subscription required
Fax(307)-682-6468
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
Production Start...
Mine Life2054


Owners

Source: p. 1
CompanyInterestOwnership
Western Fuels Association Inc. 100 % Indirect
Western Fuels-Wyoming Inc. (operator) 100 % Direct
Western Fuels-Wyoming Inc. operates the Dry Fork mine

Contractors

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Deposit Type

  • Sedimentary


Summary:

General Geology
The strata in the Dry Fork Mine (DFM) permit area generally show northwest to north-northwest strikes and gentle westward dips. The synclinal axis trends north to northwest near the western edge of the PRB, adjacent to the Casper Arch and the Big Horn Mountains. Gentle folds occur on the eastern and northern flanks, while faults and locally overturned beds are characteristic of the much steeper western and southern flanks. The northern and eastern areas of the basin have gentle dips that seldom exceed a few degrees. Regional dips in the Gillette area are from 0.5 degrees in the surface sediments to 3 degrees in the deeper sediments toward the southwest. No major faults have been mapped in the Gillette area (Hodson et al. 1973).

The general analysis area (northern group of mines - Dry Fork, Rawhide, Buckskin, Eagle Butte, Synthetic Fuels, and Wyodak, in the part of the Northern Great Plains that includes most of northeastern Wyoming) contains the following stratigraphic units or layers (in descending order from the surface): Quaternary (most recent) deposits, the Eocene Wasatch Formation, and the Paleocene Fort Union Formation.

Surficial Geology – Quaternary deposits in the general analysis area consist of alluvium, sheetwash, colluvium, and lacustrine deposits. Quaternary deposits represent a minor component of the surficial geology within the DFM area. Exposed and weathered Wasatch Formation residuum comprises the majority of the ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The DFM conducts open pit surface coal mine using conventional truck and loader methods. The average production rate at the DFM is approximately 6 million tons per year (Mtpy) and the maximum production rate is 15 Mtpy. A2Tr1 would not change the average production rate or the maximum production rate for the life of the mining operation.

Front-end loaders are the only loading piece of equipment utilized at Dry Fork Mine and are critical to the operation.


Crushing and Grinding


Processing


Summary:

Systems installed included a truck dump/crusher station, conveyors, silo storage feed and reclaim, transfer building, train loadout building, precision batch loadout system.

TECHNICAL DETAILS:
- Installed 2,270 lf of conveyors;
- One Gundlach Crusher;
- One Stamler Feeder/Breaker;
- One Schilbe & Smith Sampling System;
- One 120 ton loadout by Kanawha Scales System;
- Four pneumatic dust collectors;
- Installation of a 69 kVA substation and power distribution for the entire facility.


Production:

CommodityUnits2021202020192018201720162015
Coal (thermal) tons  ......  Subscription required  ......  Subscription required  ......  Subscription required6,304,0226,045,6186,141,4336,369,206
All production numbers are expressed as ROM coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Coal tonnes mined  ......  Subscription required  ......  Subscription required6,102,072 tons of ROM coal6,304,022 tons of ROM coal6,045,618 tons of ROM coal6,141,433 tons of ROM coal
Subscription required - Subscription is required.

Reserves at December 31, 2018:
The Mineral Resources as at 31th December 2021 at Dry Fork mine are unchanged from Dec 31, 2018

CategoryTonnage Commodity
Proven & Probable 250 M tons Coal (thermal)


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment:
HME TypeModelQuantityRef. Date
Drill Dec 31, 2021
Excavator Dec 31, 2018
Loader ....................... Subscription required Dec 31, 2021
Loader (FEL) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Truck (haul) ....................... Subscription required Dec 31, 2021
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2022
Subscription required - Subscription is required.

Staff:

EmployeesTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Other 2018
Environmental Assessment 2017
Other 2017
Other 2017
Press Release 2017
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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