National Museum of Nuclear Science & History
C. Heim worked for the Watson-Flagg Engineering Company.
Howard “Howie” Wilcox was an American physicist. He studied at the University of Minnesota and was a teaching fellow at Harvard when he was recruited to work on the Manhattan Project at Los Alamos.
Lawrence Kimpton was the Chief Administrative Officer at the University of Chicago Metallurgical Lab, serving there from 1943 to 1945.