National Museum of Nuclear Science & History
George Riggenbach was a staff worker at Los Alamos during the Manhattan Project.
Holman worked at the 300 Area at Hanford during the Manhattan Project.
Arthur Buck was a security guard for the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.
Walter A. Spradlin served as a staff sergeant in the 393rd Bombardment Squadron. He was the tail gunner regularly assigned to the B-29 Strange Cargo.
