E. Cybert, Jr.

Donald A. Franke

Franke worked in the United States Engineer District Office.

Velva Irwin

Velva Irwin worked as a Calutron girl at the Y-12 Plant at Oak Ridge, TN. She was only 16 when she began working on the Manhattan Project.

Theodore Hall

Theodore “Ted” Hall (1925-1999) was an American physicist and an atomic spy who passed along detailed information about the implosion-type “Fat Man” bomb and several processes for purifying plutonium to the Soviet Union.

Robert H. DeGroot