Everyone is free to guess. (but Based on what?)
If this were a pre-revenue mining stock, the drill results have been good based on 90 meter spacing. Now we are in a process analgeous to moving from indicated to probable to proven reserves. To delineate the ore body between those points by taking samples at closer 30 meter intervals to prove it is continuous. I've never had one get this far and fail to produce the expected results. If anything, they might hit a bonanza grade vein or two along with the good average grade. You can wait till first pour, but by then you've missed a lot of the increase in NPV along with the over-imagined risk.