The north limb is a point that I have been trying to make for some time on this board. I'm glad you brought it up.
Actually the hi-fetheoletic aspect of the north limb is considerably larger than that of the south limb. Since the south limb hi-fetheoletic contains the highest gold grades so far, it is conceivable that the north limb will host considerably more gold than the south limb because of its size. The few shallow drill holes from the north limb have confirmed the similar grades to the south limb at shallower depths. I don't believe we have too much if anything by way or deeper holes on the north limb.
Of course that needs to be proven and would require a drill program there to do so. In light of yesterday's 43-101 I think that drilling of the north limb is a long way off.