Officials from the Division of Mining Reclamation and Safety say extensive mitigation efforts in Colorado to address burning and smoldering coal from a former mine beneath the Marshall Mesa Trailhead ...

This story has been updated to correct information about responses to a study by the Associated Governments of Northwest ...

Gold giant Newmont Corp. is putting its lone active mine in ... RELATED: Colorado mining company reaches deal to supply EV battery giant RELATED: Coal miners in North Dakota discover 7-foot ...

DENVER— A federal judge blocked the 2,000-acre expansion of a coal mine in the wildlands of Colorado’s Gunnison National Forest today, ordering the Trump administration to consider limiting methane ...

An incident at a former Colorado gold mine that ... natural resources and the history of mining in Colorado." But federal authorities have warned that active and abandoned mine sites still ...

DENVER— A federal judge approved a consent agreement today that requires Mountain Coal Co., a subsidiary of Arch Coal, to operate pollution-control equipment and obtain and comply with a Clean Air Act ...