WOC type iron ore waggon WOC 31361 is one of a batch of thirty built by Goninan WA between October 1997 to January 1998 with fleet number 421 and build date of 12/1997, for Koolyanobbing iron ore operations with a 75 ton capacity and lettered for KIPL, Koolyanobbing Iron Pty Ltd, on an empty train at Binduli, 31st May 2007.