Ann: Mineral Resource Estimate Update for Mulgine Trench Deposit, page-94

At first I thought this was a no brainer because of the 1m oz gold but digging a little deeper raises more questions than answers.

Out of the 1m oz Au, 770k oz is indicated which means it can't be used in a feasibility study because it's just a guess of a geologist getting paid by the company, only the inferred amount can.
For the 230Koz inferred figure, it's at 0.1g/t which seems to be of extremely low grade. Eg another feasibility study used 0.33g/t Au as the cut off for calculating reserves so it would seem at first blush to be not worth mining...

However, these results are all from the one area, Mulgine Trench. Does that mean that if they were to plan a open pit mine and basically dig up the whole area, that they'll get all the goodies in one go (tungsten, gold, silver, copper)? But then you'd still need to process them separately to extract each substance. How does this work?