National Museum of Nuclear Science & History
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.
Frank Fessenden worked for the Tennessee Eastman Corporation at the Y-12 Plant.
G. Hedrick worked for the Comstock-Bryant Electric Company.
Babcock worked in the United States Engineer District.