National Museum of Nuclear Science & History
Halloran worked in 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.
Irvine McKey served in the 603rd Air Engineering Squadron.
Ralph R. McCoy served in the 393rd Bombardment Squadron.
