National Museum of Nuclear Science & History
Gerald F. Clapso served as a sergeant in the 393rd Bombardment Squadron. He was the radar operator regularly assigned first to Luke the Spook and later to Big Stink.
Greening worked in the United States Engineer District Office.
Livingston worked in the 100 F Area at Hanford during the Manhattan Project.
Walt Simon, a chemist, was Hanford’s first Operations Manager. Before joining the Manhattan Project, he was plant manager at Wabash River Ordnance Works, a DuPont plant near Terre Haute, Indiana.
