National Museum of Nuclear Science & History
Gilbert Plass was a Canadian physicist. Plass was born in 1922 in Toronto. He received a B.S. in physics from Harvard University before being hired to work on the Manhattan Project at the Chicago Met Lab, where he worked as an associate physicist.
Edgar Chaney served in the 393rd Bombardment Squadron.
Charlie Stallings was a staff member at Los Alamos during the Manhattan Project.
Halbrook worked in the United States Engineer District Office.