National Museum of Nuclear Science & History
W. B. Humes worked for the Edenfield Electric Company.
John Arthur "Jack" Robinson was a machinist and instrument maker at the Clinton Engineering Works in Oak Ridge, Tennesse in 1943.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
Crews worked at the 100-F Area at Hanford during the Manhattan Project.