National Museum of Nuclear Science & History
J. P. Moore worked as a chemist for US Vanadium Company and then as Chief Chemist at Grand Junction, CO, where he analyzed uranium.
Groht worked for Stone and Webster Engineering Corporation.
Ralph Nash worked for the Roane-Anderson Company.
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.