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United States
Navajo Mine

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 Location:
33 km SW from Farmington, New Mexico, United States

  Address:
4801 North Butler Ave Building 2000
Farmington
New Mexico, United States
87401
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
Production Start...
Mine Life25 years (as of Jan 1, 2014)


Owners

Source: p. 4,6
CompanyInterestOwnership
Navajo Transitional Energy Company, LLC (operator) 100 % Direct
Navajo Transitional Energy Company, LLC, a wholly-owned limited liability company of The Navajo Nation, controls all of the reserves within the Navajo Mine.

Effective September 30, 2021, the contract mining agreement between Bisti Fuels Company, LLC (subsidiary of North American Coal Corporation) and its customer, Navajo Transitional Energy Company ("NTEC") was terminated. As required under the agreement.

As of October 1, 2021, NTEC assumed control and responsibility for operation and all reclamation of the Navajo Mine.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The Navajo Tribal Coal Lease is located on the western flank of the San Juan Structural Basin in northwestern San Juan County approximately 15 miles southwest of Farmington, New Mexico. This basin is an asymmetric, structural basin with a northwest trending axis parallel to the Hogback Monocline in northwest New Mexico. The basin is bounded on the northwest by the Hogback Monocline and on the north by the San Juan Uplift. The eastern rim is formed by the Brazos Uplift and the Nacimiento Uplift. The Zuni Uplift and the Chaco Slope form the southern margin of the basin while the Defiance Uplift and Four Corners Platform complete the northwestern basin rim. The San Juan Watershed lies on the eastern edge of the Colorado Plateau and extends from northwestern New Mexico into portions of northeastern Arizona along the New Mexico/Arizona border, southwestern Colorado, and the southeastern most corner of Utah. The San Juan Watershed is approximately 140 miles wide by 200 miles Jong, and covers a total area of 21,600 square miles (URS 2009).

The rock strata in the southern part of the lease area strike north-south while the strata in the northern part strike northeast-southwest. The geologic formation dips gently to the east toward the center of the San Juan Basin at an angle of one to two degrees, and steepens toward the outcrop areas where the fairly abrupt monocline (Hogback) can be observed.

The stratigraphic section in the lease area reflects the Late Creta ........


Mining Methods

  • Truck & Shovel / Loader
  • Dragline


Summary:

The Navajo Mine - dragline operation with 2 draglines.

Dragline stripping is the primary mining method used for multiple seam mining operations at the Navajo Mine. The typical sequence for multiple seam mining is as follows:
1. Vegetation and topdressing removal;
2. Overburden drilling and blasting;
3. Overburden removal;
4. Coal drilling and blasting;
5. Coal removal;
6. Interburden drilling and blasting;
7. Interburden removal;
8. Repeat steps 5 through 7 for each minable seam.

The coal seams at the Navajo Mine are exposed in pits that range in width depending on the size of the dragline equipment that is being used to expose them. Pit depths range from 5 to 240 feet, and pit lengths range from 1,000 to 15,000 feet.

Overburden Drilling and Blasting
After all suitable topdressing material is removed, rotary drills are used to drill overburden blast holes. Blast-hole diameters range from 5 to 10 5/8 inches. Blast holes typically are drilled to the top of the coal seam that is being uncovered (until coal is encountered) and then backfilled with 1 to 10 feet of drill-hole cuttings to prevent coal shattering and any accompanying coal loss during blasting. However, some holes may be drilled to a specified elevation of 3 to 7 feet above the coal seam and not backfilled to reduce coal loss due to the movement of the overburden over the coal seam.

Once a set of blast holes has been dr ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits202120202019201820172016
Coal (thermal) tons  ......  Subscription required  ......  Subscription required  ......  Subscription required3,397,5373,661,2314,107,436
All production numbers are expressed as ROM coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Coal tonnes mined  ......  Subscription required  ......  Subscription required5.26 M tons3.4 M tons3.66 M tons4.11 M tons
Subscription required - Subscription is required.

Reserves at :




Heavy Mobile Equipment as of October 1, 2021:
HME TypeModelSizeQuantity
Dragline ....................... Subscription required 124 cu. yd ....................... Subscription required
Dragline ....................... Subscription required 64 cu. yd ....................... Subscription required
Drill ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Surface miner ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 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
Subscription required 2013
Subscription required 2012

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Other 2018
Form 10-K 2017
Form 10-K 2016
Other 2016
Other 2016
Annual Report 2015
Environmental Impact Statement 2015
Form 10-K 2015
Other 2015
Other 2013
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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