National Museum of Nuclear Science & History
M. K. Walsh worked for the Roane-Anderson 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.
Florentino Ortiz was a carpenter at Los Alamos during the Manhattan Project.
Billy J. Harman served in the 603rd Air Engineering Squadron.
Walter F. Arnold was a staff member at Los Alamos during the Manhattan Project.
