National Museum of Nuclear Science & History
R. G. Hester worked for the Tennessee Eastman Corporation at the Y-12 Plant.
R. O. worked for Clinton Laboratories at the X-10 Reactor.
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.
