gindalbie metals - a rational analysis , page-23

They are railing the karara wagons 2kms south of Perenjori and loading it via loaders. Looks like MGX they have leased a farm on Perenjori Rothsay Road. Also look like there is a fare bit of gold exploration going on out that way as well.

"Ore mined at Extension Hill is crushed and screened on-site before being loaded onto trucks for the 85-kilometre journey to Perenjori, where it is loaded into ore wagons at a purpose-built rail loading facility and railed 239-kilometres directly to the Port of Geraldton" from MT Gibson Web page.

I would say they would be purchasing it at a much cheaper rate as MGX does not have to rail it in there small capacity bottom dumbing wagons, (32T a wagon I think) dump it store it and load it.

And here is one for you..... QR are using the same 4100 series engines to pull both karara wagons and the MGX ones.