National Museum of Nuclear Science & History
Charles W. Hagen was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Henry Barwick worked as a plumber, pipefitter, and steamfitter during the building of the Y-12 plant at Oak Ridge.
Lewis worked in the 200 West Area at Hanford during the Manhattan Project.
Clapp worked at the 300 Area at Hanford during the Manhattan Project.