National Museum of Nuclear Science & History
Winzenburg worked for Stone and Webster Engineering Corporation.
Keene worked in the 200 West area at Hanford during the Manhattan Project.
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.
