National Museum of Nuclear Science & History
W. H. Zimmer worked for the United States Engineer District Office.
Thomas Farrell (1891 – 1967) was a major general in the US Army. Farrell was hand-picked by General Groves to serve as his deputy, or as the Deputy Commanding General of the Manhattan Project.
A. W. Alexander worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Harrison Brown (1917-1986) was an American geochemist. He worked at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) and Oak Ridge sites during the Manhattan Project.