The haystack is some hard, but the needle orebody is larger than average. There are ways to find this thing. Probably IP would help. Then MMI, and geology. What gallery needs is a geologist to tell them where to drill. VENTS, ALTERATION, PHREATOMAGMATISM.. ROCK GEOCHEMISTRY, VOLCANIC GEOLOGY.. FAULT ZONES... DOWNHOLE.. PORPHYRY... just a few hints.. EC<:-}