WO type iron ore waggon WO 31209 is leader of a batch of sixty two built by Goninan WA between April and August 2000 with serial number 950086-001 and fleet number 105 for Koolyanobbing iron ore operations, and is a Goninan built replacement WO type waggon with a build date of 05/2000, this replaces the original WAGR built WO type waggon with a WOD type with square features opposed to the curved ones as on the original WO, Binduli Triangle 22nd August 2010.