National Museum of Nuclear Science & History
Barrett worked for Stone and Webster Engineering Corporation.
Mangold worked in the 200 West Area at Hanford during the Manhattan Project.
Hart worked at the 300 Area at Hanford during the Manhattan Project
Michael Angelich served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the bombardier of the B-29 Full House, which served as a weather reconnaissance plane on the Hiroshima bombing mission, and the backup strike plane on Iwo Jima on the Nagasaki mission.
