National Museum of Nuclear Science & History
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
Andrew Williams served in the 603rd Air Engineering Squadron.
Walt Simon, a chemist, was Hanford’s first Operations Manager. Before joining the Manhattan Project, he was plant manager at Wabash River Ordnance Works, a DuPont plant near Terre Haute, Indiana.