I am not sure why anyone look at the size of the resource via...

I am not sure why anyone look at the size of the resource via the DFS. The aim of the DFS is to show bankers and bankers are not interested in the upside, just the worse case scenario since they are exposed to the downside and not the upside. The DFS is there to ensure the bankers get paid back, not the shareholders.

If you want to know how much gold Rothsay will produce you need to look at the MRE and factor in what yet to be found and what can be mined at a profit.