National Museum of Nuclear Science & History
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.
O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah.
Cecil H. Ensley served in the 603rd Air Engineering Squadron.
W. N. Sparke worked for the J.A. Jones Construction Company.
