Sinnemahoning Path

Historical marker location:

Emporium, Pennsylvania

( Marker is on East CCC Memorial Highway (Pennsylvania Route 120) 1.5 miles north of Steam Mill Road, on the right when traveling south.)

Marker installed: 1950

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.