"A worsening financial crisis for the nation’s biggest coal companies is sparking concerns that U.S. taxpayers could be stuck with hundreds of millions, if not billions, of dollars in cleanup costs across a landscape of shuttered mines stretching from Appalachia to the northern Plains.
Worries about huge liabilities associated with hundreds of polluted mine sites have mounted as Peabody Energy, the world’s largest publicly traded coal company, was forced to appeal to creditors for an extra 30 days to pay its debts. Two of the four other biggest U.S. coal companies have declared bankruptcy in the past six months.
Under a 1977 federal law, coal companies are required to clean up mining sites when they’re shut down. But the industry’s plummeting fortunes have raised questions about whether companies can fulfill their obligations to rehabilitate vast strip mines in Western states — many of which are on federally owned property — as well as mountaintop-removal mining sites in the East."