Utah coal mine has emitted methane in the decade since it idled operations

Correction: Dec. 7, 11:46 a.m. • No known leaks or venting has occurred at the Centennial Mine since the time it fixed three leaking wells in June.Price • The Centennial Mine, tucked in a scenic cleft under Utah’s Book Cliffs known as Deadman Canyon, once extracted bituminous coal from deep under the West Tavaputs Plateau, but the dangers of operating in methane-infused deposits 3,000 feet below the surface forced its owner to suspend operations.That was more than 10 years ago, b