National Tube Co.
Charles T. Littleton
United States International Trade Commission.
Thomas Sixsmith
Smith, Lee
Carl L. Svensen
Reno C. King
Ernest Shurtleff Holmes
Tim Britton
Arnold Hartley Gibson
Harry Ameredes
Leslie Avinal Miller
R. W. Lerwick
Charles N. McConnell
William S. Janna
Ductile Iron Pipe Research Association (U.S.)
Pierre Sabbagh
Unk
Engineering Sciences Data Unit.
Portland Cement Association. Water Resources Bureau.