100731 0307961 viewsWOA type iron ore waggon WOA 31320 is one of a batch of thirty nine built by WAGR Midland Workshops between 1970 and 1971 with fleet number 209 for Koolyanobbing iron ore operations, with a 75 ton and 1018 ft³ capacity, empty train arriving at Binduli Triangle, 31st July 2010.