National Museum of Nuclear Science & History
Robert M. Sells served in the 1027th Air Material Squadron.
Harding worked at the 300 Area at Hanford during the Manhattan Project.
O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
