National Museum of Nuclear Science & History
Calvin B. Popwell served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Big Stink, and he and his crew were later reassigned to Luke the Spook.
Benjamin C. Diven was born in northern California, and graduated from University of California, Berkeley with a degree in physics in 1941.
Kelley worked in the 300 Area at Hanford during the Manhattan Project.
