National Museum of Nuclear Science & History
Greenhalgh worked in the United States Engineer District Office.
John Otto worked for Clinton Laboratories at the X-10 Reactor.
Howard Muller was a staff worker at Los Alamos during the Manhattan Project.
Joe R. Brown served as a corporal in the 393rd Bombardment Squadron. He was the radar operator regularly assigned to the B-29 Some Punkins.
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.