The Great Meadows

Historical marker location:

Farmington, Pennsylvania

( Marker is on National Pike (U.S. 40) west of the Fort Necessity National Park entrance, on the left when traveling west.)

Marker installed: 1920

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.