National Museum of Nuclear Science & History
John Brady served as a Machinist at the Hanford Nuclear Reservation from 1943 to 1960. He was proud of the work he did at Hanford, though it was always a mystery to his children because Brady wouldn't talk about his job.
Fischer worked in the United States Engineer District Office.
David H. Frisch was an American physicist. He worked on the Manhattan Project at Los Alamos, working with the Van de Graaff long tank accelerator to measure neutron cross sections.