Overview
| Stage | Reclamation |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
- Surface miner
- Truck & Shovel / Loader
|
July 1, 2020 - The termination of the coal supply contract between Comisión Federal de Electricidad and Dos Republicas Coal Partnership (“DRCP”) eliminated DRCP’s need for coal from Eagle Pass Mine, and resulted in mine closure.
The coal mining group is now looking to begin the reclamation process at the Eagle Pass mine as required under the Texas Railroad Commission permits. On July 6, 2020, they filed the necessary request documents to begin this process. |
Source:
p. 12
Dos Republicas Coal Partnership (subsidiary by Altos Hornos de Mexico) controls all of the reserves within the Eagle Pass Mine.
Summary:
Type of Mine: Surface Bituminous
Coal Formation: Olmos Formation
Average Seam Thickness: 5.5 feet
Average Depth: 50 feet
Average Coal Quality (As received):
Heat Content - 6,700 BTUs/lb
Sulfur - 1.00%
Ash - 40%
Moisture - 11%
Mining Methods
- Surface miner
- Truck & Shovel / Loader
Summary:
Predominantly all machinery and equipment belongs by the owner of the mine.
The Eagle Pass Mine began selectively mining the thin coal seams with a Wirtgen type 4200 SM surface miner in October 2015.
The Wirtgen surface miner is used to selectively extract coal from the rock. This enables to achieve a high material quality. The four seams lie beneath an 18.3 m layer of top soil and overburden, in a series of layers around 6,0 m thick. Barely 1.65 to 2.0 m of this is coal.
The 4200 SM transfers a 250 t payload onto dumpers. They transport the coal to a transshipment center equipped with five grizzlies and conveyors. Each grizzly supplies one loading conveyor which transports the coal to the train-loading station.
The surface miner crushes the coal to a maximum size of 10 cm while minimizing fines. As coal fines tend to block the loading conveyors at the transfer points when there is a high moisture content, a low proportion of fines is a great advantage. Almost 95% of the coal is crushed and loaded by the 4200 SM. The remaining 5% – i. e., material located in inaccessible corners or right at the end of a drift – is broken up by bulldozers and loaded by front loaders.
Production:
| Commodity | Units | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Coal (thermal)
|
tons
| ......  | ...... | 2,437,496 | 1,788,032 | 715,112 | 1,478 |
| Heat Content | BTU/lb | 6,700 | | | | | |
| Sulfur | % | 1 | | | | | |
All production numbers are expressed as ROM coal.
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Operational Metrics:
| Metrics | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Coal tonnes mined
| ...... | ...... | ...... | 1,788,032 tons | 715,112 tons | 1,478 tons |
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Reserves at December 31, 2019:
| Category | Tonnage | Commodity |
|
Proven & Probable
|
15.6 M tons
|
Coal (thermal)
|
Heavy Mobile Equipment as of December 1, 2020:
| HME Type | Model | Quantity |
|
Surface miner
|
.......................
|
1
|
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Aerial view:
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