National Museum of Nuclear Science & History
Winzenburg worked for Stone and Webster Engineering Corporation.
Henry Barwick worked as a plumber, pipefitter, and steamfitter during the building of the Y-12 plant at Oak Ridge.
Sara B. Chettkow was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Helen Thomson was a techinician in the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
