National Museum of Nuclear Science & History
Arthur Sievert worked for Hanley & Company.
M. M. Marshall worked for the Roane-Anderson Company.
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.
Guy C. Bradley served in the 603rd Air Engineering Squadron.
