I detest discounted NPV's unless you're going to inflate the...

I detest discounted NPV's unless you're going to inflate the revenues and the costs and then guess what??? Same answer as un-discounted in the first place.....nevertheless, its ignorant convention.

Who knows on DFS. PFS was pretty detailed.but DFS is quoted/costed proof at a higher level of certainty so is more dependable. Whatever the result, the game has been moved forward at that point.

More discovered oz will be a proportionately larger return to bottom line - plant cost and overheads are already covered by the existing DFS/Reserve.