National Museum of Nuclear Science & History
Robert M. Donnell served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the flight engineer regularly assigned to the B-29 Strange Cargo.
S. C. Barnett worked for the Union Carbide & Carbon Corporation.
George Allen served in the US Armed Forces and flew B-29s in the air force during World War Two. He did not see action, but was in Alamogordo, New Mexico, when the Trinity Test was conducted and witnessed the explosion from afar.
Richard L. Doan was the Director of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.