back of the envelope valuation

I was just doing a little bit of a calculation and was pleasantly surprised with the figures that I came up with. Would love for others to check them.

Last Drilling reults from Mt Carlton are as follows
Gold - 99,000 Ounces (Current price US$632 Oz)
Silver - 1,490,000 Ounces (US$11.30 Oz)
Copper - 4960 Tonnes (US$7710 tonne)

Now calculate that out and we have

Au - US$62,568,000
Ag - US$16,837,000
Cu - US$38,241,600

Total Value so far in ground : US$117,646,600

These are on the figures from three months ago so I am expecting this to be increased with further results.