Summary

Mine Type	Underground
Status	Closing / Closed
Commodities	Coal (thermal)
Mining Method	Continuous Longwall Room-and-pillar
Production Start	...
Snapshot	On September 13, 2022, underground crews have mined the last ton of coal from San Juan Mine destined for the San Juan Generating Station.

Deposit type

• Sedimentary

Summary:

The San Juan Mine is located on the western flank of the San Juan Basin. The underground mining operation targets the Fruitland Formation Number 8 coal seam, the shallowest coal-bearing formation; the seam averages 11 feet in thickness in the permit area.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Commodity Production

Commodity	Units	2022	2021	2020	2019	2018	2017	2016	2015
Coal (thermal)	tons	....	....	....	3,775,959	1,848,018	5,327,442	4,330,717	6,517,519
Heat Content	BTU/lb			9,100
Sulfur	%			0.75

Operational metrics

Metrics	2022	2021	2020	2019	2018	2017	2016
Coal tonnes mined	....	....	....	3,775,959 tons	1,848,018 tons	5,327,442 tons	4,330,717 tons
Raw coal annual capacity	....	....	....	6.4 M tons	6.4 M tons	9,000 k tons