National Museum of Nuclear Science & History
R. K. Dean worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
S. W. Pratt worked for Clinton Laboratories at the X-10 Reactor.