National Museum of Nuclear Science & History
Harold Smith worked for the Kellex Corporation at the K-25 Plant.
Dorothy Vance worked for the Edenfield Electric Company.
Calhoun worked at the 300 Area at Hanford during the Manhattan Project.
Marjorie Hall Bradner was a secretary at Los Alamos during the Manhattan Project. She was also the wife of Los Alamos physicist Hugh Bradner.
