National Museum of Nuclear Science & History
D. W. King worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Norman F. Modine was a research assistant at the University of Chicago Met Lab. He was a signer of the Szilard petition.
J. P. Sinclair worked for Clinton Laboratories at the X-10 Reactor.
Dennis Dwyer was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.