National Museum of Nuclear Science & History
Calvin worked in the United States Engineer District Office.
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.
E. A. Pluhar worked for the Union Carbide & Carbon Corporation.
Leonard Czarniecki served as procurement planning and control officer with 9812th Technical Services Unit (Special Engineer Detachment) at Oak Ridge, TN, with the Y-12 Plant.
