National Museum of Nuclear Science & History
H. L. Roland worked for the Midwest Piping and Supply 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.
J. F. Ryan worked for Clinton Laboratories at the X-10 Reactor.
DePersio worked in the United States Engineer District Office.
E. H. Grey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
