National Museum of Nuclear Science & History
G. W. Johnson worked for the Edenfield Electric Company.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Morris R. Jeppson served as a lieutenant in the 1st Ordnance Squadron. He also worked as a weapons test officer.
C. D. Greenway worked for Clinton Laboratories at the X-10 Reactor.
