National Museum of Nuclear Science & History
Arnold graduated from Northwestern University in 1941 with a B.S. degree in Biology and a minor in Chemistry.
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.
Gibson worked in the United States Engineer District Office.