John Ursch

M. P. Seyfried

Henry J. Ward

Henry Ward worked for the United States Engineer District Office.

Myrtle E. Karcher

Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Chien-Shiung Wu

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.