National Museum of Nuclear Science & History
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.
Charles Swenson worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
William Kann was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
