National Museum of Nuclear Science & History
Twichell worked at 200 West Area at Hanford during the Manhattan Project.
Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.
Joseph C. Disparti served in the 1st Ordnance 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.
