Mining Porphyry Copper - What You Need to Know

The whole economic model with porphyries is big tonnage low grade. So you're mining a lot of tonnage and your profits relatively small per tonne but it's a numbers game. You know, 0.2% copper sometimes may be up to a percent and a half. That'd be a pretty high porphyry deposit. Most of them are much less than that. And their dimensions are hundreds to thousands of meters. But they don't have to be super high grade. If I go to something like sediment hosted, so their grades tend to be higher. When you come to the volcanic massive sulfide deposits, these are more similar to the sediment hosted. They

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