National Museum of Nuclear Science & History
John Ramsey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Reed worked at the 100-F area at Hanford during the Manhattan Project.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
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.