Ann: Expanded 2023 Growth Drilling Programme, page-11

No idea of current costs.
Noticed a cross post from @ExpGeo that used direct drilling costs. The result is similar....but @ExpGeo is more current.

Aircore cheaper than RC cheaper than Diamond.

All in costs for managing rigs and assays relatively constant with a slight bias because more time for RC and Diamond.

All in costs can be surprisingly high on a per metre basis and will vary for many reasons.

Mob Demob to Minyari would IMO be more expensive than around Kalgoorlie as one of many examples someone like @Onceover would probably have a pretty good handle on.

Say 5Kms AC at $100/m all in $500K
6Kms RC at $1-200/m av $150/m $900K
1Km Diamond at $300/m $300K

Extremely rubbery figures almost picked out of the air suggest not much change out of $2M.

Maybe inflation has hit costs even more than my ancient knowledge but I would be surprised if Diamond costs would exceed $300/m and savings using a RC/DD rig could kick in.