National Museum of Nuclear Science & History
Samuel Smith was a staff worker at Los Alamos during the Manhattan Project.
F. L. Shanklin worked for the Union Carbide & Carbon Corporation.
Richard Emanatian was with the military police detachment at Los Alamos during the war. He maintained secrecy through the rest of his life, and his family only found about his involvement long after his death.
W. K. Martin worked for the Tennessee Eastman Corporation at the Y-12 Plant.