National Museum of Nuclear Science & History
A. R. McCallum worked for the United States Engineer District Office.
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
Richard F. Cannon served as a corporal in the 393rd Bombardment Squadron. He was assigned as the radar operator in the Necessary Evil, but flew in the Big Stink in the 1945 bombing mission on Nagasaki.
