Ann: High-Grade Assays Confirm Bornite Zone at Emmie Bluff Deeps, page-46

I agree with your numbers for Prominent Hill and Carrapateena, but Olympic Dam's discovery hole was RD1 with 38m @ 1.05% Cu, and the next hole was a duster. It took them several more holes over the next couple of years with mixed results before they intersected significant widths and grades with hole RD10 with 170m @ 2.12% Cu. Similarly, look at the variability in the holes of Oak Dam West, AD-23 is 425.7m @ 3.04% Cu and 0.59g/t Au, but AD-22 was 124.5m @ 0.52% Cu and 0.48g/t Au, AD-24 was 406m @ 0.66% CU and 0.35g/t Au and AD-25 was 77m @ 2.11% Cu and 0.54g/t Au.

This is 28m @ 1.21% Cu and 0.38g/t Au in a wedge from the first deep hole into this target. it May not be a great first hole but then it wasn't for Olympic Dam either, more drilling will provide more answers.