National Museum of Nuclear Science & History
V. C. Kelsey worked for the Roane-Anderson Company.
Chemist Orville Hill joined the Met Lab at the University of Chicago in May of 1942, three months after it was created.
Manuel Schwartz was a physicist. He worked at Los Alamos as a civilian employee from about July 6, 1944, until January or February 1946.
E. E. Beauchamp worked for Clinton Laboratories at the X-10 Reactor.