Katy Human and Jeff Roberts of The Denver Post examined mine safety records for Colorado and found that its "eight underground coal mines paid fines totaling almost $500,000 for hundreds of safety violations in the past two years." One mine was cited 350 times last year for a total of nearly $50,000. In comparision, the Sago Mine in West Virginia, a more productive mine, was cited 208 times and fined about $24,000 during the same time. The report does say that Colorado's mines are "safer than the national average for several years when measured in terms of injuries, according to federal figures."
Looks like you haven't made a choice yet.