C. E. Cox

N. F. Hanke

N. F. Hanke worked for Clinton Laboratories at the X-10 Reactor.

Matthew Imrie

Frank Karcher

Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Marion L. Arnold

Marion L. Arnold was a staff member at Los Alamos during the Manhattan Project.