RE: Whats the AISC?29 Jul 2021 21:48
Hi, spoon. No one knows, it's a total guess at this point.
Probably the biggest unknown is the byproduct impact. The copper (and other byproducts, if any) will be treated as a credit against the AISC. Since Cadia produces loads of Cu, and since the price of Cu is soaring, it has reduced Cadia's AISC to negative at times -- the copper revenue from Cadia is greater than the cost of production.
I don't expect Havieron to produce as much copper as Cadia. It's possible mining costs will be lower than Cadia simply because NCM is always getting better and better at what they do. There will be extra transport costs, etc, compared to Cadia simply because Havieron is much more remote. There is also the cost of transporting the ore to Telfer, that's going to be important.
There's also an unknown which either hasn't been decided or hasn't been reported -- toll processing fees. NCM owns the plant at Telfer and they won't be providing it for free. The fact that it is there means no massive CAPEX to build one, but the JV will be paying NCM a nice fee for processing the ore. That will also be included in the AISC.
To my way of thinking, it is likely to be somewhere between $400-800 / oz. There are too many unknowns to get more precise than that. NCM and GGP undoubtedly have a much better idea of some of these costs than I do, so I'm sure their range of expected AISC is much narrower, but I think my numbers are pretty good. If Cu prices keep soaring, that will drop.
Also, Bamps has talked about some of the other minerals present and the possibility of recovering some of them. I've heard from other sources that is not likely to be economical. If Bamps is right, though, that would reduce AISC further by providing further byproduct credits.
The PFS may give a little more info about some of this and help us narrow the range.