National Museum of Nuclear Science & History
J. C. Hecker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
F. G. Schuyler worked for the Kellex Corporation at the K-25 Plant.
Thomas Cowley was a Military Policeman assigned to Post Security at Los Alamos, New Mexico during the Manhattan Project.
W. H. MacDonald worked for the Union Carbide & Carbon Corporation.
Chien-Shiung Wu (1912-1997) was a Chinese American physicist. During the Manhattan Project, she worked at Columbia University, helping develop the process for separating uranium metal into U-235 and U-238 isotopes by gaseous diffusion.