National Museum of Nuclear Science & History
E. C. Manners worked for Clinton Laboratories at the X-10 Reactor.
W. H. Rohrer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
George Maronde was a security guard at the University of Chicago Metallurgical Lab. He stood guard outside Stagg Field when Chicago Pile-1 went critical on December 2, 1942.