Charli Oliver

Ian Glacken - Director of Geology's 30 Seconds of Advice. Be aware of the limitations of ID estimation: Inverse distance (ID) is often touted as a viable alternative to Ordinary Kriging (OK), and it can be – but you must appreciate its two or three very serious limitations and correct for these. The limitations are that there is no accounting for data clustering (unlike OK) and the choice of a power is essentially arbitrary. As long as you are aware of these issues, ID can sometimes be used as a ‘check’ technique for OK.

This week's 30 Seconds of Info comes from Ian Glacken - Director of Geology: Always look at a range of top-cut (capping) techniques: There is no single ‘magic bullet’ technique for top-cutting a set of data; the top-cut chosen will depend upon the nature of the data, the support of the data and the location of the sample points...

Blanks should never be inserted at regular intervals within the sample stream:  It is always much more easy for automation of the QAQC process that blanks are inserted at regular intervals, but this is not optimal and is in fact…

This week’s 30 Seconds of Info comes from Ian Glacken – Director of Geology. Grabbing samples from ore passes:  Deriving grades from underground ore passes, especially in precious metal mines, is a hit-and-miss activity at best, and may give a…

This week’s 30 Seconds Of Info comes from Ian Glacken – Director of Geology:  iglacken@snowdenoptiro.com Reconciliation best practice:  No subjectivity; a robust industrial-strength database at the heart of the system; no spreadsheets for mission-critical data; charts and colours make understanding…