National Museum of Nuclear Science & History
Manning worked for Stone and Webster Engineering Corporation.
Gilbert Mathis was an electrical engineer at Los Alamos from 1943 to 1946. He was recruited for the Manhattan Project as a member of the US Army Signal Corps.
Charles E. Kircher III (1908-1972) was a chemical engineer who worked on the Manhattan Project for DuPont.
Salvatore S. Sanfratello served in the 1027th Air Material Squadron.
A. H. Dahl worked for the Tennessee Eastman Corporation at the Y-12 Plant.