- Worker safety
- Environmental stewardship
- High-grade, clean coal
- Efficient, low-cost production
We have a diverse portfolio of four mining operations in Utah and Colorado that produce an aggregate of 13 million tons of high-BTU, low-sulfur bituminous coal. Our mines include some of the most productive and longest, continuously-operating mines in the United States. We have two active longwall mining operations; Sufco Mine and Skyline Mine, one active room-and-pillar operation; Dugout Canyon Mine, and one idle mine; Bowie #2 Mine.