National Museum of Nuclear Science & History
E. J. Risdon worked for the Roane-Anderson Company.
A. H. Caldwell worked for the G.G. Ray Company.
C. F. Hill served in the 509th Headquarters and Base Services Squadron.
J. J. Maroone worked for the Union Carbide & Carbon Corporation.
Lee W. Trybell worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
