National Museum of Nuclear Science & History
S. A. Hindley worked for the J.A. Jones Construction Company.
R. J. Guthrie worked for the Watson-Flagg Engineering 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.
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
Attended Washington University.