Sweetwater Branch

Historical marker location:

Waynesboro, Tennessee

( Marker is on Natchez Trace Parkway (at milepost 363), 7 miles south of Waynesboro Highway (U.S. 64), on the left when traveling north.)

The Oak Ridge National Laboratory, located in Oak Ridge, Tennessee, played a crucial role in the development of the atomic bomb during World War II. It was also a key site for nuclear research during the Cold War.