The Skyline mine, located in Eccles Canyon south of Scofield, began production in the early 1980s when Coastal Corp. bought the leases from Energy Fuels Co. and developed three sets of mine entries, the #1 mine, #2 mine and #3 mine. The #2 mine closed in the mid to late 1980s, the #1 in the 1990s and the #3 mine has been operating almost the entire time.

Due to water infiltration problems, the entire facility became idle in early 2004 and is expected to remain this way indefinitely. The Skyline mine produced coal from the Upper and Lower O'Connor seams.

Skyline mine operations	Skyline mine portals	Skyline mine operations
Skyline mine operations	Skyline mine operations	Conveyor leading to Skyline loadout
Conveyor leading to storage silos and loadout	Conveyor leading from silos to loadout	Skyline loadout