Is 23-05 a mineable copper deposit? Worldwide the minimum threshold for an open pit Copper mine is 0.25% Cu (no cover rock). The minimum threshold for an underground Copper mine is 1.25% Cu. No matter how you cut it 45 m of 1.94% Cu is a spectacular interval. Can they find lots more? That is the question.
Mine engineering isn't my expertise but I'm thinking of a triangular open pit mine in the SE quadrant of the IP survey area with adits at the bottom of the pit accessing that which is underneath the Hercules rhyolite. I can't imagine the mine operator removing all of that Hercules rhyolite unless the silver content pays for it. Hole\ 23-05 is underground mine country in my book.