National Museum of Nuclear Science & History
R. E. Hoffman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Cummings worked for Stone and Webster Engineering Corporation.
Ralph McElroy worked for the Kellex Corporation at the K-25 Plant.
Dick Kosh was an American physicist. He worked at the Los Alamos site during the war, arriving from the University of Wisconsin, Madison, and then stayed afterwards.
