AVB has 661kt cu and 527k ounces of gold. They are claiming a copper equivalent of 773,000 tonnes. That means that 527k ounces of gold equals 112k tonnes of copper. I know it's not quite right, but that's roughly 20k tonnes of copper for every 100k ounces of gold.
That means that Pedra Branca's 327,000 ounces of gold is worth over 60k tonnes of copper. So that would add another few million to your calcs.
Big Elephant.
These are all on company fact wiki's on tenbagsfull.
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