RE:RE:Let's compare drilling technique and results, and see.While I agree with the need for a MRE, it's a bit of stretch to say that mined grade has no correlation with properly measured drill core grades
Mined grades are based on Reserves which have the highest spatial density of drilling rates and include a cutoff grade which eliminates low grade uneconomic ore.
Run of the deposit drill core grades includes all results , does not include cutoff grades but the statistical variance of those grades would include those cores selected for Reserves.
Average core Grades Weighted by interval length regressed against Reserve grades would be correlated to Reserve grades with an intercept approximately equivalent to the cut off grade.
This would not apply if the drill results were cooked or where drilling intensity does not meet minimum statistical industry standards.
Regardless, with over 550000 metres of drilling, there should be sufficient core data to complete MRE
for one or more of the shallow deposits.
Keats comes to mind..