National Museum of Nuclear Science & History
Halbrook worked in the United States Engineer District Office.
John Topham worked for the Edenfield Electric Company.
Leland Nelson worked for Clinton Laboratories at the X-10 Reactor.
Nelen Supert was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Clinton B. Gass was a G.I. at Los Alamos who worked in the Special Engineer Detachment unit under the Theoretical Physics Division, headed by Dr.
