National Museum of Nuclear Science & History
R. M. James worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.
Russell D. Carrigan served as a staff sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Some Punkins.
Desiderio Vigil was a staff worker at Los Alamos during the Manhattan Project.