National Museum of Nuclear Science & History
Fred Saak served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Philip C. McKenna was a laboratory assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cloyd Marvin had been drafted into the Army, interrupting his education at Haverford University, in 1943 and joined the Special Engineer Detachment as a technician third grade, later being assigned to Los Alamos National Labs in 1947.
Badger worked in the 100 B Area at Hanford during the Manhattan Project.