Lawsuit Challenges Coal Mine Approvals in Four States BILLINGS – An environmental group seeking to temporarily halt mining at seven coal mines in four states has sued the federal government, saying Thursday the approval of the mines allowed companies to dig up a combined 1.3 billion tons of the fuel across the Rocky Mountain West. The lawsuit filed in U.S. District Court in Colorado by WildEarth Guardians alleges the Department of Interior ... [News Source]