National Museum of Nuclear Science & History
Buettner worked in the United States Engineer District.
Samuel R. Wheeler served as a sergeant in the 393 Bombardment Squadron. He was the assistant engineer regularly assigned to the B-29 Strange Cargo.
Roscoe Charles Wilson was a United States Army Air Forces Officer. At the rank of Colonel he was the overall Project Office to the Manhattan Engineering District from June 1943 to December 1944.
Walter Groeger worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.