National Museum of Nuclear Science & History
L. G. Chelius worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Olga Nelson was a staff worker at Los Alamos during the Manhattan Project.
Edward B. Doocy worked for the Watson-Flagg Engineering Company.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.