National Museum of Nuclear Science & History
R. A. Smith worked for the H. K. Ferguson Company.
Robert Pierce served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
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.
