National Museum of Nuclear Science & History
R. D. Campbell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Leonard Quartararo was a staff worker at Los Alamos during the Manhattan Project.
Carl Wright worked for the J.A. Jones Construction Company.
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.