National Museum of Nuclear Science & History
M. O. Swanson worked for the United States Engineer District Office.
George Graves was a technical advisor at Hanford, and so famous there that he inspired a poem: "We'd called up a tight design/ Hewn strictly to the longhairs' line.
Robert Miller was a Major in the US Army Corps of Engineers and Chief of the Priorities & Expediting Section at Oak Ridge, Tennessee.