National Museum of Nuclear Science & History
C. R. Frazier worked for the Poe Piping & Heating Company.
Arthur L. Hughes was an British/Welsh physicist. He worked on the Manhattan Project in St. Louis on the cyclotron and plutonium production and at Los Alamos, NM.
H. G. Singleton worked for the Roane-Anderson Company.
Samuel Hopkins Bassett was an American physician who worked as part of the Manhattan Project at the University of Rochester.