National Museum of Nuclear Science & History
Arnold Grubbe (1904-2002) was an engineer working for the civilian contractor Crane Company in Oak Ridge, Tennessee.
Austin M. Brues (1906-1991) was the Director of the Biology Division at the Manhattan Project’s Chicago location, the Metallurgical Laboratory (Met Lab).
DePersio worked in the United States Engineer District Office.
J. R. Wood worked for the J.A. Jones Construction Company.