John J. Murphy

Walter Simon

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.

John R. Affleck

M.W. Riser

Riser worked at the 200 West Area at Hanford during the Manhattan Project.

D. J. Brimhall