National Museum of Nuclear Science & History
J. A. McCormick worked for the Tennessee Eastman Corporation at the Y-12 Plant.
O. H. Moyer worked for the J.A. Jones Construction 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.
John Willard was a research associate at the Chicago Met Lab during the Manhattan Project.