Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Nancy Greenewalt Frederick is the oldest daughter of Crawford Greenewalt, a chemical engineer who worked on the Manhattan Project and later become president of the DuPont Company. 

Related Profiles

Janice Witt Purkey

Oak Ridge, TN

Janice Witt Purkey was the daughter of William Augustus Witt, an Army soldier stationed at Oak Ridge, Tennessee.

Catherine Dvorak

Trinity Site

Cathy Dvorak’s is the daughter of Colonel Clifford Heflin, the Commanding Officer of Wendover Air Base.

Herbert “Herb” W. Depke

Hanford, WA

Herb Depke arrived in Hanford in 1943 after his father was transferred by the DuPont Company to work as an expediter during the Manhattan Project.

Margaret “Peggy” Dickson

Oak Ridge, TN

Peggy Dickson moved to Oak Ridge in the fall of 1944, when she was 14 years old. Her father, Charles Russell Dickson, Sr.