Ann: High-Grade Assays Confirm Bornite Zone at Emmie Bluff Deeps, page-25

A couple of things you need to consider though, there is the Emmie Bluff Zambian mineralisation. If that is developed, then you are already down 400m, and you are halfway there. Olympic Dam was only discovered after 2 years of drilling and 8 drill holes before they started to get an idea of what they had, and that first intersection was 30m @ 1% Cu. The Cu price is a lot higher than it was back then, as is gold, so if you get intersections of 240m at 2% Cu then it is more economic and much more likely to be mined.