National Museum of Nuclear Science & History
D. R. Johnson worked for the Roane-Anderson Company.
Casmer Lesnioski worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
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.
D. G. Schultz worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hays worked in the United States Engineer District Office