ROUNDUP, Mont.—Environmental groups sued Tuesday to halt an expansion of the Bull Mountains Mine, claiming that the “energy emergency” underpinning its revival is nonexistent and that regulators have been aware for decades that underground coal mining would irrevocably damage the area’s water. The case, filed in the U.S. District Court for the District of Montana, … Continue reading New Lawsuit Aims to Halt Expansion of a Montana Coal Mine Blamed for Drying up the Land Above It