WOA type iron ore waggon WOA 31326 is one of a batch of thirty nine built by WAGR Midland Workshops between 1970 and 1971 with fleet number 211 for Koolyanobbing iron ore operations, with a 75 ton and 1018 ft³ capacity, trailing view with EoT device and loaded ore train departing Binduli Triangle, 5th June 2010.