National Museum of Nuclear Science & History
Fred Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
P. B. Mayo, Jr. worked for the J.A. Jones Construction Company.
Harry Palevsky (1919-1990) was an American engineer. A Chicago native, Palevsky began his work on the Manhattan Project at the University of Chicago Metallurgical Laboratory shortly after finishing his undergraduate career at Northwestern University.