National Museum of Nuclear Science & History
J. A. King worked for the Roane-Anderson Company.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
Marion Mandel was a laboratory technician in the Health Division at the University of Chicago Met Lab.
James Jensen was a machinist at Hanford, Washington from September 1944 to the end of the war. Jensen's security clearance allowed him to machine parts and complete various tasks for the maintenance of the nuclear piles.
