National Museum of Nuclear Science & History
Helen Addison worked for the Roane-Anderson Company.
Clapp worked at the 300 Area at Hanford during the Manhattan Project.
Eloy Roybal was a staff worker at Los Alamos during the Manhattan Project.
Sidney J. Bellamy served as a corporal in the 393rd Bombardment Squadron. He was regularly assigned to the Necessary Evil as a radar observer, but flew in the Big Stink in the mission to Nagasaki.
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
