National Museum of Nuclear Science & History
Hayes worked in the United States Engineer District Office
Joe was a staff member at Los Alamos during the Manhattan Project.
Duillio DiCostanzo worked at the shop in the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
William Jacob was a staff worker at Los Alamos during the Manhattan Project.
Thomas Evans worked for the Tennessee Eastman Corporation at the Y-12 Plant.