I'm not sure I understand your question properly. I don't think anyone knows how grade will vary with depth (unless their geophysics helps them?) - no doubt there will be variability but who knows what that will be and what patterns may arise. All we have so far is the grade at the NCP11B step-back contact was lower than in the NCP08 contact above it. From a mine plan point of view it would be better if any higher grade zones were towards the top so they could be accessed early.
What’s CBE Worth, page-906
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