National Museum of Nuclear Science & History
I. A. Rathburn worked for the Edenfield Electric Company.
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
Robert C. Hirt was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Oscar J. Thigpen served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Top Secret.
