National Museum of Nuclear Science & History
C. W. Gray worked for the Edenfield Electric Company.
Hallie Perry was an electrician at Oak Ridge, Tennessee for the Watson-Flagg Engineering Company from 1943 to 1945.
John Jackson was a member of the 393rd Bomber Squadron in the 509th Composite Group stationed in Wendover, Utah, and later on Tinian Island in the Pacific.
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
