United States

El Segundo / Lee Ranch Mine

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Mine TypeOpen Pit
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
Production Start... Lock
Mine Life2044
ShapshotEl Segundo / Lee Ranch signed a new, long-term coal supply agreement - extending the life of the mine.


Peabody Energy, Inc. 100 % Indirect
El Segundo Coal Company, LLC (operator) 100 % Direct
El Segundo Coal Company, LLC, a subsidiary of Peabody Energy, Inc., owns and operates the El Segundo mine.

Deposit type

  • Sedimentary


The El Segundo Mine is located in the southeastern plains of the San Juan Basin, bordered by the uplands of Chacra Mesa to the northwest, Mt. Taylor volcanic area and San Mateo Dome to the southeast, and the Zuni Uplift and Rutria Monocline to the southwest. The tectonic setting is uncomplicated with the beds dipping gently to the northeast into the San Juan Basin at a rate slightly greater than one degree. Geologic formations present at El Segundo are the basal Mesa Verde Group, Point Lookout sandstones, and the Menefee Formation coals and shales. In this area of the San Juan Basin, the Menefee Formation is divided into the upper barren Allison Member and the basal, carboniferous Cleary Member.

The Cleary member of the Menefee formation contains the mineable coal seams. There are 1 to 9 seams, varying from 1 to 17 feet in thickness that could be recovered. The primary recoverable seams are the blue and green followed by the tan and brown seams. The upper overburden is mostly sandstone with some shale. Once the upper tan seam is encountered, interburden and partings tend towards interbedded sandstones, siltstones, mudstone and shales to the lower recoverable green seam. The typical geologic column shows approximately 230 feet of overburden and interburden to the bottom of the lower recoverable green seam.

The topography at the El Segundo Mine is described as low cuestas and shallow drainages. The permit area is bisected north to south by the Continental Divide. Sandstone outcrops are present within and adjacent to the permit area with cliff faces generally less than 100 feet in height.

Soils in the El Segundo permit area are typically formed from sandstone parent materials and minor inclusions of shale and siltstones. Many of the soils have developed from eolian deposits or dune formations. Some of the dune or eolian deposits are recent and have been reworked by wind action. The sandstone parent material and formations are the primary source for the eolian deposits and dunes. Alluvial soils derived from sandstones and shales are common in drainages, swales, and old lakebeds or playas. To a lesser degree, soils derived from colluvium may be present in the permit area. The extensive sandstone parent material has resulted in many of the soils having predominantly sandy textures.



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Mining Methods


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Crushers and Mills

Milling equipment has not been reported.



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Coal (thermal) M tons 00000000005.54.9
Heat ContentBTU/lb9,2509,1009,1009,0009,0009,250
All production numbers are expressed as ROM coal.

Operational metrics

Coal tonnes mined 00000000005.5 M tons

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment


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EV - Electric


Mine Management

Source Source
Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 29, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Feb 29, 2024
....................... Subscription required ....................... Subscription required Subscription required Feb 29, 2024

EmployeesContractorsTotal WorkforceYear
Subscription required 2023
Subscription required Subscription required Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2014

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