O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah. Simpson, as a classified materials courier, frequently traveled in heavily armed convoys to Utah and Los Alamos by truck and plane. He retired in 1972 as deputy director of security at Hanford.
O.R. Simpson
CourierHanford, WA
Manhattan Project Veteran
Listen to O.R. Simpson’s Oral History on Voices of the Manhattan Project