Bill Gardner

Robert A. Collins

R. H. O’Brien

O'Brien worked for Stone and Webster Engineering Corporation.

W. Sadler

Sadler worked at the 100-B Area at Hanford during the Manhattan Project.

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.