National Museum of Nuclear Science & History
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
W. Maddox worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
William P. Sensibaugh served in the 1027th Air Material Squadron.
Hugh T. Richards was an American physicist. He worked on neutron measurements for the atomic bombs at Los Alamos during the Manhattan Project.