I hope someone here can educate me a little to understand...

I hope someone here can educate me a little to understand todays' result when it comes out.

Specifically:
- What would be industry average grades for the assay results, and at what point are we talking about good/great/exceptional?
- What way can I extrapolate any figures that might get reported? How many tonnes of raw material would you get from your average gold dig?

As exciting as all the speculation about how many oz per tonne there might be at the extremes in their samples, it doesn't help me get any kind of idea what a given number translates into for the operation as a whole :)

I'd be very grateful to anyone that knows gold mining sufficiently to help me understand a little better.