built at walkers ltd marybrough qld.
they were used as shunting engines. a lot of them have been converted for sugar mill use by bundaberg walkers engineering.

I can't tell you much about the diesel locomotive that they have up there, but I could dig up a picture of my late grandfather onboard the locomotive when a section of the line reopened as a tourist railway back in the '90's. I could also find a picture of him as a young man on the original steam locomotive that operated on the line from Moe to Walhalla when he worked as a fireman on the engine I believe.
Irrelevant piece of information but I have a proud family connection to the railway nonetheless.