National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
Wesley R. Prohs served in the United States Naval Reserve. He also worked as a member of Project Alberta, the team that transported and assembled the two atomic bombs preceeding the August 1945 bombing missions on Hiroshima and Nagasaki.
Charles E. Kircher III (1908-1972) was a chemical engineer who worked on the Manhattan Project for DuPont.
Charles Ragan worked for the United States Engineer District Office.