I can't find any reference to increasing throughput beyond...

I can't find any reference to increasing throughput beyond original design capacity.

???

I don't understand this bit. If plants could extend throughput based on current setup, why the need for expansions for any other plant? Just increase the operational hours, isn't it?

Modular design does not stretch output, hence the need for further build, eg Stage 2.

Re your description of the rest of the process, I just skimmed through them. As I said, my background is not in mining.

Anyway, maybe you should give AJM a call. It's up to them how much to tell you.

btw, imo and dyor