National Museum of Nuclear Science & History
Frederic Showalter served in the First Ordnance Squadron.
Joseph B. Borger 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.
Clarence Yohn worked for the Tennessee Eastman Corporation at the Y-12 Plant.
