1978. Unit 2 of Three Mile Island went online. March 28, 1979. One of the two reactors at Three Mile Island experienced a mechanical or electrical failure in water pumps that helped cool its core.

In the shadow of Three Mile Island’s iconic cooling towers, state Rep. Tom Mehaffie recalled Wednesday how his father, 50 years earlier, built a career and a life around the nuclear power plant.

LONDONDERRY TOWNSHIP, Pennsylvania — The efforts to reopen one of Three Mile Island’s nuclear reactors accelerated by an entire year last week, less than 50 years after the worst nuclear ...

An air view shows the Three Mile Island nuclear power plant near Harrisburg, Pa., March 30, 1979. The small dome at center is where the "incident" occurred. (AP Photo/Barry Thumma, file ...