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Nathan McGinty's avatar

Really good primer. Has taken me decades to acquire most of this knowledge on my own. The only thing missing would be diamond core vs reverse circulation drilling.

Alain Gilbert's avatar

Great point Nathan — diamond core vs RC is one of those distinctions that changes how you read the numbers. Adding it to the next edition.

Nathan McGinty's avatar

Thank you. Only recently tried to wrap my mind around the distinction. I'd like to know aside from lower cost, and maybe faster assays(?), is RC adequate for near-surface or lower grade deposits ... or is it more nuanced than that?