Hey Sculpin good post. Don't want to sound critical, but gotta correct your Math. 7 cents on that much copper would give you 70 Million, not 7 Million.
However, I know in the past, you, Hog & I have discussed copper, and thought if any Math was done, we probably should lean a little more conservative, and say 5 cents. But, even then, that would put you at 50 Million for the copper from your example.
Bottom line, like you say, it's very interesting seeing Compania de Minas Buenaventura wanting to conduct a review of the property!!