https://hotcopper.com.au/posts/36740889/single "Reasoning for...

https://hotcopper.com.au/posts/36740889/single


"Reasoning for TAW to take staged approach was multi-pronged approach

DMS ——> Fines.

1. Feedback at commercial throughput rates - This gave the company the commercial scale feedback/knowledge to fine tune things on the DMS before deciding on the best approach over both DMS and fines. The FS study provided for up to 10mm crush size as the best approach for processing. This has since changed up to 18mm due to production feedback which very likely would never have been assessable in a lab or pilot plant/BFS studies etc. Its not a cookie cutter install.

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Altura are using an upper end crush size (as per DFS) of 6mm.
I would guess PLS are using similar but can't see anything about it in the DFS.
So TAW is up to X3 coarser product in this regard.

AJM are quoted as having 40% of total output as fines as opposed to 20% expected from TAW of total output. Im not sure about PLS here. Fines is generally considered as less than 1mm but TAW fines is less than 2mm, again coarser than peers and than anticipated in initial studies. "

Our fines is expected to be much more coarse than anticipated originally.