National Museum of Nuclear Science & History
Helen Mannon worked for the Roane-Anderson Company.
Lawrence H. Johnston was an American physicist. After receiving his bachelor’s degree in physics from the University of California, Berkeley in 1940, Johnston followed his mentor Luis Alvarez to MIT.
Frank D. Duffy served in the 393rd Bombardment Squadron.
Jane Hamilton Hall (1915-1981) was an American physicist. Shortly after receiving her Ph.D. in physics from the University of Chicago in 1942, Hall became a research assistant at the Chicago Metallurgical Laboratory.