National Museum of Nuclear Science & History
Vaughn Wrenn worked for the Roane-Anderson Company.
Max Gittler was working on his degree in mechanical engineering at NYU when he was drafted into the Army during World War II.
Robert H. Maas served in the 603rd Air Engineering Squadron.
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.