National Museum of Nuclear Science & History
H. F. Koch worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Smith worked at the 200 West Area at Hanford during the Manhattan Project.
Lloyd J. Williams was a staff worker at Los Alamos during the Manhattan Project.
Gilbert Mathis was an electrical engineer at Los Alamos from 1943 to 1946. He was recruited for the Manhattan Project as a member of the US Army Signal Corps.
