L. D. McCraw

F. Snodgrass

F. Snodgrass worked for the Roane-Anderson Company.

Arthur J. Monroe

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. Van Horn