National Museum of Nuclear Science & History
Engel worked in the United States Engineer District Office.
Arthur L. Hughes was an British/Welsh physicist. He worked on the Manhattan Project in St. Louis on the cyclotron and plutonium production and at Los Alamos, NM.
Robert M. Haider served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
Mumford worked in the 200 East Area at Hanford during the Manhattan Project.
C. Cooper worked for the Tennessee Eastman Corporation at the Y-12 Plant.
