The expansion permits Signal Peak Energy to extract nearly 60 million tons of coal from the Bull Mountains mine north of Billings.

A retired North Dakota coal mine is set to become the new home of a nickel processing plant.

Even as President Trump vows to reinvigorate America's coal industry, critics say his administration has stripped away key health protections for miners.

People have mined coal in Arizona for at least 700 years, but today the only active mine in the state is the Kayenta Mine at the Black Mesa field on ...

Chesterfield County has a rich coal mining history, but most of it is buried in the ground. On Thursday, though, the county gained a visible symbol of its heritage. A 35-foot wooden reproduction ...