National Museum of Nuclear Science & History
J. T. Calvert worked for the Union Carbide & Carbon Corporation.
Zen B. Portwood worked for the J.A. Jones Construction Company.
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.
