A historical marker commemorates the 1979 nuclear accident at Three Mile Island — the most serious in U.S. history. To the left are the cooling towers for the mothballed Unit 2 reactor, which partially melted down.
A historical marker commemorates the 1979 nuclear accident at Three Mile Island — the most serious in U.S. history. To the left are the cooling towers for the mothballed Unit 2 reactor, which partially melted down.