This Day in History: 1979-03-28

(March 28, 1979)
An automatic valve at the Three Mile Island nuclear power facility outside Harrisburg, Pennsylvania, was accidentally closed at 4:00 a.m., resulting in radioactive leakage.
(March 28, 1979)
An automatic valve at the Three Mile Island nuclear power facility outside Harrisburg, Pennsylvania, was accidentally closed at 4:00 a.m., resulting in radioactive leakage.