National Museum of Nuclear Science & History
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
E. F. Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Carl R. Erickson served in the 320th Troop Carrier Squadron.
O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah.