Rare earth elements are a family of 17 metallic elements with unusual properties that make them useful for specific ...

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

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

EPA's ruling won't stop construction of the Hermosa Mine, which began last fall near Patagonia in Southern Arizona.

The Midlothian Ruritan Club will be cleaning up the Midlothian Coal Mines. Members adopted the area as a project to keep the access trails and the mine site clear of ...