National Museum of Nuclear Science & History
Holl worked for Stone and Webster Engineering Corporation.
F. H. Holbrook worked for the United States Engineer District Office.
Bell worked in the United States Engineer District Office.
E. C. Armstrong worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Bruno Yurgaites was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
