Mario T. Sgriccia

Kenneth L. Cohn

Kenneth L. Cohn was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Curtis W. Caddell

Curtis W. Caddell served in the 1st Ordnance Squadron. 

Albert Wissing

Harold E. Hoover

Harold Hoover was a member of the Special Engineer Detachment during the Manhattan Project. He worked as a filter foreman at the Y-12 Plant, but his real job was in counterintelligence, to ensure no sabotage occurred.