Asset Report
Eagle Specialty Materials Powder River Basin coal mines
*Please note that this report only includes an Excel data file if this is indicated in "What's included" below
Report summary
Eagle Specialty Materials (ESM) operates two truck and shovel surface mines in the Powder River Basin - Belle Ayr and Eagle Butte. The thermal coal mines in Wyoming sell primarily to utilities in the domestic market. ESM received the lease from the mines’ previous owner and operator, Blackjewel, after prolonged negotiations with the Department of the Interior over unpaid royalties.
Table of contents
- Summary
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Key issues
- Belle Ayr
- Eagle Butte
- Belle Ayr
- Eagle Butte
- Belle Ayr
- Eagle Butte
Tables and charts
This report includes the following images and tables:
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Detailed map - North PRBDetailed map - Central PRBParticipation
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Coal seamsMarketable reserves (at 01/01/2026)ProductionProductionMine summary 2026Cash costs 2026 (US$/short ton)Company average cash costs and margin (US$/short ton)Cash costsCapital costs (US$ million)
- 2 more item(s)...
What's included
This report contains:
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