RE: question30 Jan 2020 16:38
Well when the sales price is far in excess of the production cost, then it should all drop to bottom line, but I think you are trying to link the Au price to the value of a company with a deposit, which is really tough.
High cost mines would have a very high beta, positive and negative and low cost mines would have lower betas. If I have confused you even more, I would stick to Au price up = good news!