National Museum of Nuclear Science & History
Leon Leventhal was a nuclear chemist and radiation expert who worked at Oak Ridge, the University of Chicago’s Met Lab, and Los Alamos Laboratory during the Manhattan Project.
Diamond worked in the United States Engineer District Office.
E. E. Beauchamp worked for Clinton Laboratories at the X-10 Reactor.
Jas Howe worked for the Tennessee Eastman Corporation at the Y-12 Plant.