National Museum of Nuclear Science & History
Paul W. Gruning served as a 2nd lieutenant in the 393rd Bombardment Squadron. He was the bombardier on the B-29 Jabit III on the Hiroshima mission.
Edward Smith was a chemical engineer employed by the civilian contractor Eastman Kodak at the K-25 Plant in Oak Ridge, Tennessee.
J. V. Hubbard worked for the Tennessee Eastman Corporation at the Y-12 Plant.