National Museum of Nuclear Science & History
Magdaline Penny worked for the United States Engineer District Office.
Hardleben worked at the 100-F Area at Hanford during the Manhattan Project.
Leo A. Ohlinger was a senior engineer at the University of Chicago Met Lab. Ohlinger was also Section Chief of P-IX, Engineering Physics.
Jacob Epting worked as a carpenter in Oak Ridge, TN from November 1942 to October 1943. While Epting assumed he was building a hospital, he was never formally told about the project he was working on.
