National Museum of Nuclear Science & History
A. A. White worked for the United States Engineer District Office.
Gabriel worked at the 100-D Area at Hanford during the Manhattan Project.
August “Gus” Knuth was a millwright and carpenter who helped construct Chicago Pile-1. He was present on December 2, 1942 when the pile went critical in the first self-sustaining chain reaction in history.
M. E. Brennan worked for the Watson-Flagg Engineering Company.
Leo A. Ohlinger was a senior engineer at the University of Chicago Met Lab. Ohlinger was also Section Chief of P-IX, Engineering Physics.