National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
Robert Tait worked for the United States Engineer District Office.
Ethel Schwartz arrived as a bride with her husband, Manuel Schwartz, at Los Alamos in 1944. She worked in the office until she became pregnant with her son, Joel Schwartz, who was born there after the bombs were dropped on August 6, 1945.