National Museum of Nuclear Science & History
W. C. Marr worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
George Struthers worked for Clinton Laboratories at the X-10 Reactor.
J. R. O'Neill worked for the Tennessee Eastman Corporation at the Y-12 Plant.