National Museum of Nuclear Science & History
Harris worked for Stone and Webster Engineering Corporation.
Johnstone worked at the 300 Area at Hanford during the Manhattan Project.
Sergeant Abe Spitzer was a radio operator who witnessed both the bombings of Hiroshima and Nagasaki. He served as the radio operator for The Great Artiste, which served as the blast measurement instrumentation aircraft during the Hiroshima bomb mission.
Hayes worked in the United States Engineer District Office.
