National Museum of Nuclear Science & History
Engel worked in the United States Engineer District Office.
Thomas F. Costa served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the bombardier regularly assigned to the B-29 Some Punkins.
Bailey worked for Stone and Webster Engineering Corporation.
Charles E. Kircher III (1908-1972) was a chemical engineer who worked on the Manhattan Project for DuPont.