National Museum of Nuclear Science & History
A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
Gamble worked in the United States Engineer District Office.
