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United States
Trapper Mine

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 Location:
10 km S from Craig, Colorado, United States

  Address:
25910 State Highway 13
Craig
Colorado, United States
81625
Phone  ...  Subscription required
Fax(970)-826-6136
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
  • Highwall
  • Backfill
Production Start...
Mine Life2025
All of the coal produced at Trapper Mine is delivered by conveyor to Craig Generating Station.


Owners

Source: p. 61
CompanyInterestOwnership
Platte River Power Authority 27.14 % Indirect
Trapper Mining Inc. (operator) 100 % Direct
Platte River has a minority ownership share of the Trapper mine. Platte River’s ownership share of the mine is 27.14%. Co-owners include Salt River Project and PacifiCorp.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Sedimentary


Summary:

The Trapper Mine is located in the Yampa coal field that is composed of coal-bearing rocks that are Upper Cretaceous in age. The coal-bearing rocks mainly outcrop south of the Yampa River in northwest Colorado. The Yampa coal field extends east to west about 50 miles (80.5 km) and is about 40 miles (64.4 km) north to south.

The surface bedrock in the Trapper Mine Project Area is mainly the Upper Cretaceous Williams Fork Formation, which is part of the Mesaverde Group, a regional unit that contains a large coal resource in northwest Colorado (Brownfield and Johnson 2008). The Williams Fork Formation consists of interbedded sandstones, siltstones, shale, and coals and crops out along a six-mile-wide (9.7-km) belt that extends along the entire length of the Williams Fork Mountains (Tweto 1976). The Williams Fork Formation is underlain by the Illes Formation, also part of the Mesaverde Group. The Illes Formation is lithologically similar to the Williams Fork Formation consisting of sandstones, mudstones, carbonaceous shale, and coal (Brownfield and Johnson 2008). The Lewis Shale, which is stratigraphically higher than the Mesaverde Group, outcrops in the northern extremity of the SMCRA permit area. The Lewis Shale also is Upper Cretaceous in age and is composed of uniform dark-gray marine shale, but also contains thin sandstones (Johnson 1987; Tweto 1976). Surficial deposits consist of alluvium, residuum derived from the Williams Fork Formation and the Lewis Shale, and ........


Mining Methods

  • Truck & Shovel / Loader
  • Dragline
  • Highwall
  • Backfill


Summary:

The Trapper Mine uses a combination of dragline, truck shovel, and highwall mining methods to remove the overburden and mine the coal. Coal mined at the Trapper Mine is delivered by truck to the Craig Station at an average rate of approximately 2.3 mtpy (with a maximum rate of 2.6 mtpy). The coal is mined from seven coal seams of the Upper Williams Fork Formation: the “H,” “I,” “K,” “L,” “M,” “Q,” and “R” seams. Within the Project Area, the “R” seam is too deep for surface mining. Draglines were the primary earthmoving equipment used until October 8, 2006, when a 250-acre landslide occurred within the Project Area. Following the landslide, mining has been accomplished by a combination of dragline, dozer, and truck and loader operations, depending on the depth and material being mined. The overburden, or rock that lies above the coal seams to be mined, is drilled and blasted to break up the rock to allow it to be moved using the mining equipment. Blasting is performed using an ammonium nitrate and fuel oil (ANFO) mixture. After overburden blasting is completed, the overburden removal begins. For the Project Area, overburden removal would occur primarily using trucks and loaders. The maximum coal depth for the Project Area would involve the initial use of trucks and loaders because the draglines cannot economically remove materials deeper than 200 feet. The overburden ranges in depth from 100 to 150 feet. Following removal of overburden by the trucks and loaders, dozers scr ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Coal (thermal) tons  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required2,140,4611,576,6191,809,325
All production numbers are expressed as ROM coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Coal tonnes mined  ......  Subscription required  ......  Subscription required2,018,648 tons1,954,282 tons2,140,461 tons1,576,619 tons
Stripping / waste ratio  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at :




Heavy Mobile Equipment as of February 25, 2022:
HME TypeModelSizeQuantity
Dragline ....................... Subscription required
Excavator ....................... Subscription required 36.6 cu. yd ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 31, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
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
Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
Other 2023
Other 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Other 2018
Press Release 2016
Project Description 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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