I hope the conditions at Tesoro are a lot better than you describe. The company drilling your location SW of Tesoro sounds very, very secretive, and this probably means the cores are very, very good, a small chance, or are being managed by worshipers of BreX.
I agree the chances of a surprise primary copper deposit are extremely slim, based on the underground workings and analysis of our hub leaders. Importantly the chargeability values have to be considered, I don't think copper would render values of 18 and 16 microradians. Since you are also a SLI shareholder, you are also of that opinion