National Museum of Nuclear Science & History
Hayes worked in the United States Engineer District Office.
Rocco F. Serrietella served in the 393rd Bombardment Squadron.
Bob Emigh was in the Navy and worked with Deak Parsons on telemetry for the bombs. He was assigned as the science officer for the planned third bomb.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
