National Museum of Nuclear Science & History
Stanley Liebert was a machinist in the SAM Laboratory at Columbia University between 1944 and 1945.
D. T. Eggen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Warren worked at the 200 West Area at Hanford during the Manhattan Project.
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.