National Museum of Nuclear Science & History
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. D. Carol worked for the Roane-Anderson Company.
Charles W. Sweeney served as a major in the 393rd Bombardment Squadron. He was regularly assigned to the Great Artiste as the aircraft commander and participated in the mission to bomb Hiroshima as co-pilot of the Great Artiste.
