National Museum of Nuclear Science & History
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
Richard A. Bice was an engineer. He joined the Manhattan Project at Los Alamos in 1944, rising to become the alternate Group Leader in X-Division.
Kenneth Payne served in the 603rd Air Engineering Squadron.
Snyder worked at the 200 East Area at Hanford during the Manhattan Project.