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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
...
(970)-826-6136
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Overview
Owners
Geology
Mining
Processing
Production
Fleet
Personnel
Filings & News
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Overview
Stage
Production
Mine Type
Open Pit
Commodities
Coal (thermal)
Mining Method
Truck & Shovel / Loader
Dragline
Highwall
Production Start
...
Mine Life
2025
All of the coal produced at Trapper Mine is delivered by conveyor to Craig Generating Station.
Owners
Source:
p. 61
Company
Interest
Ownership
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
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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
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:
Summary:
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Production
:
Commodity
Units
2022
2021
2020
2019
2018
2017
2016
Coal (thermal)
tons
......
......
......
......
2,140,461
1,576,619
1,809,325
All production numbers are expressed as ROM coal.
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Operational Metrics:
Metrics
2022
2021
2020
2019
2018
2017
Coal tonnes mined
......
......
......
1,954,282 tons
2,140,461 tons
1,576,619 tons
Stripping / waste ratio
......
......
......
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Reserves at :
Heavy Mobile Equipment as of February 25, 2022:
HME Type
Model
Size
Quantity
Dragline
.......................
Excavator
.......................
36.6 cu. yd
.......................
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Mine Management:
Job Title
Name
Profile
Ref. Date
.......................
.......................
Aug 5, 2023
.......................
.......................
Jul 31, 2023
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Staff:
Employees
Year
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
Corporate Filings & Presentations:
Document
Year
...................................
2023
...................................
2022
...................................
2022
Fact Sheet
2021
Other
2021
Annual Report
2020
Other
2020
Annual Report
2019
Other
2019
Other
2019
Other
2018
Press Release
2016
Project Description
2016
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