National Museum of Nuclear Science & History
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cleo E. Harter served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Strange Cargo.
Kathleen “Kay” (Gavin) Florin was a clerk in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
