National Museum of Nuclear Science & History
Fred Brownell worked for the Comstock-Bryant Electric 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.
J. H. Russell worked for the United States Engineer District Office.
