the whole (grubby) class
All three WH class, one of the several versions of Downer-EDI's model GT46C-ACe locos. They are owned by Whitehaven, and are hauling a loaded Whitehaven coal train from the Gunnedah basin. Whitehaven purchased 3 locos and 86 wagons to make up one train (with some spare wagons) serving its mines in the Gunnedah basin.
The last loco in the consist has become quite grubby - white is not a good colour for coal working!