National Museum of Nuclear Science & History
Barksdale worked for Stone and Webster Engineering Corporation.
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.
J. F. Villere worked for the United States Engineer District Office.
O’Black worked in the 200 East Area at Hanford during the Manhattan Project.