This week, a congressional subcommittee considered the worst coal ash spill in U.S. history--last December, when a dam at a Tennessee power plant gave way, spilling a billion gallons of toxic sludge. Pennsylvania had a similar spill back in 2005. Could it happen here again? WPSU's Cynthia Berger takes a look at coal ash management in the commonwealth.
Stories: Coal Ash in the Commonwealth
December 31, 1969