Friday marks the 35th anniversary of the worst nuclear accident in U.S. history. On March 28, 1979, one of the reactors at the The Three Mile Island nuclear power plant in Dauphin County partially melted down.
Back then, no one knew exactly what was going to happen. The incident was unprecedented.
Former Governor Dick Thornburgh was at the center of the crisis. He marked the anniversary at an event Thursday at Penn State’s Harrisburg campus in Middletown–not far from the plant.