National Museum of Nuclear Science & History
Greenhalgh worked in the United States Engineer District Office.
Paul C. Schafhauser served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Necessary Evil.
Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C.
