A bit of blue sky thinking. We know we have surplus tonnes...

 A bit of blue sky thinking. 
We know we have surplus tonnes above ten years running. What Mike Young (and Greg Myles)  is saying is that we can drill as much as we like to add tonnes but have to have a good economic starter project. 
People have asked why not a second plant etc. 
I would say much more likely the latter scenario.
We get the plant that will run at 1000 TPH (10 MTPa).
Slight over Design of grinding by GDR will actually let it run at 10%-15% above that.
But we push it had hard at 25% above name-pate capacity the grind size will rise as will waste to tails. 
What we then do is put in an extra float cell to catch some of the stuff being lost.
Also we haven't yet properly explored the use of magnetic separation  to concentrate the magnetic Ni minerals and PGM's that go with them anywhere in the circuit. It could be in the middle at regrind or end.
Also we haven allowed to the pre- conditioning of water re- cycled from tailings etc. which will need less chemical additives. 

What I'm really saying is we really haven't optimised. The first stage of optimisation will come with the work to get to feasibility study. The second when we get the thing running. Over a few years you can really make it sing.  For example look at Tropicana, how IGO & Goldfields have made incremental addtions over the years. You just need to have the extra ore around (via the implied metal price). You certainly don't need to build another plant.

A couple of good Aussie saying (now attributed to John Laws). 
-  When you're on a good thing. Stick to it.