....based on the $8500/tonne value used in the resource estimate.

In gold equivalent, the indicated resources are 10 Mt @ 12.05 gpt Au
The inferred resources are 7.6 Mt @ 4.4 gpt Au

This gives 17.6 Mt at an average grade of 8.75 gpt Au

That's 153,940,000 grams of gold, or 4,920,000 troy ounces of gold.

If you don't think that's robustly economic, to mine a vertical zone of consistent dimensions, of that grade, go find yourself a flake play and dream about graphene.

Lar