National Museum of Nuclear Science & History
James C. Hobbs was an American inventor and engineer who created a key part of the valves used in the K-25 gaseous diffusion plant in Oak Ridge, TN.
Ahrens worked at the 100 B Area at Hanford during the Manhattan Project.
Pfennig worked for Stone and Webster Engineering Corporation.
W. J. Scanlan worked for the Tennessee Eastman Corporation at the Y-12 Plant.
