National Museum of Nuclear Science & History
Halbrook worked in the United States Engineer District Office.
Jas C. Deane worked for the Fercleve Corporation.
David B. McNitt served in the 1027th Air Material Squadron.
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.
Long worked for Stone and Webster Engineering Corporation.