John Nelson

Historical marker location:

3923 Main St, Lawrence Park, Pennsylvania

( Marker is at the intersection of Main Street (Pennsylvania Route 5) and Rankine Avenue, on the right when traveling east on Main Street.)

Marker installed: 2004

(1917-1959).

Pennsylvania was the site of the deadliest nuclear accident in U.S. history. In 1979, a partial meltdown occurred at the Three Mile Island nuclear power plant in Harrisburg, Pennsylvania.