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Production related matters – delivering to expectations

The Truth About Estimation #6 – The Domain Dilemma.

It had to happen. There’s no way to avoid it and still derive reasonable and robust grade predictions. We must talk about statistics. I’ll try and be gentle, make it […]

Posted on November 28, 2017 by Scott Dunham
Posted in Consider, Create, DeliverTagged Estimation, inference, statistics2 Comments

The truth about estimation #5 – Nothing is wrong with my model!

So, you think you understand the geology and your data is all ready to go. You’ve spent days, weeks, months drilling, sampling, logging and interpreting. The CEO is breathing down […]

Posted on October 3, 2017 by Scott Dunham
Posted in Consider, Decide, Deliver, DevelopTagged Estimation, thinking2 Comments

The Reconciliation Myth #9 – When in doubt…. scream and shout

What is ore? It’s a word I’ve tried to eliminate from my vocabulary because it’s hard to pin down. One man’s (or woman’s) ore is another’s waste and vice versa. […]

Posted on September 19, 2017 by admin
Posted in Commit, Consider, DeliverTagged definitions, misallocation, oreLeave a comment

The Reconciliation Myth #8 – Echoes in the wells of silence.

Question… When is an accurate estimate of tonnes and grade insufficient? Answer… When you get the geometry and location wrong. Continuing from the last reconciliation post (Hello Darkness My Old […]

Posted on August 29, 2017 by Scott Dunham
Posted in Commit, Deliver, DevelopTagged geometry, getting it wrong, ReconciliationLeave a comment

The Reconciliation Myth # 7 – Hello Darkness My Old Friend

As a younger geologist, I remember being perplexed by many ‘industry standard’ practices. Take, for example, sampling broken stocks by climbing up the rill, bucket or sample bag in hand, […]

Posted on August 10, 2017 by Scott Dunham
Posted in Commit, Consider, DeliverTagged Sampling, undergroundLeave a comment

The truth about estimation #2 – Searching… Searching… Searching…

DON’T SEARCH TO THE RANGE OF THE VARIOGRAM How many times do we need to stumble over this one folks? I was just reading yet another report of a project […]

Posted on July 28, 2017July 27, 2017 by Scott Dunham
Posted in Commit, Consider, Decide, Deliver, DevelopTagged critical thinking, Estimation, search1 Comment

The Reconciliation Myth #6 – I don’t think you understand the Gravity of the situation

Working in reconciliation space can be frustrating. Get a group of mine geologists, engineers and metallurgists together and drop the ‘R’ word and get ready to run. Nothing seems to […]

Posted on July 27, 2017July 27, 2017 by Scott Dunham
Posted in Commit, DeliverTagged density, moisture, ReconciliationLeave a comment

The Reconciliation Myth #5 – The Magic of Numbers (or Statistics and Lies)

Have you ever seen something no one else can see? Have you ever looked that little bit deeper and found something that scares you? Something that lurks below the accepted […]

Posted on July 20, 2017 by Scott Dunham
Posted in Capture, Decide, DeliverTagged Reconciliation, reconciliation accounting SPC, transparencyLeave a comment

The Truth About Estimation #1 – Vested Interests

Over the last few weeks I’ve discussed a few of the myths that surround reconciliation. There more to discuss; however, once the onion is peeled back a bit it’s clear […]

Posted on July 11, 2017 by Scott Dunham
Posted in Capture, Commit, Consider, Create, Deliver, OverviewTagged big picture, cross discipline, Estimation, transparency, value chainLeave a comment

The Reconciliation Myth #4 – “The Day-2 Conundrum” (with apologies to my accounting friends)

Picture this… A cold, winters morning. The sun is barely breaching the horizon. Everything is calm, peaceful and yet… It’s another end-of-month and time for the regular rush to publish […]

Posted on July 4, 2017 by Scott Dunham
Posted in Commit, Create, DeliverTagged reconciliation accounting SPC2 Comments

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Recent Posts

  • The Truth About Estimation – Assessing Spatial Variability
  • Circa 1993…. An adaptation
  • The Truth About Estimation #6 – The Domain Dilemma.
  • The truth about estimation #5 – Nothing is wrong with my model!
  • The truth about estimation #4 – How to interpret a drill program (for mine and resource geologists)

Recent Comments

  • George Bujtor on The truth about estimation #2 – Searching… Searching… Searching…
  • Arthur Joseph on The Truth About Estimation #6 – The Domain Dilemma.
  • Willem Kotze on The Truth About Estimation #6 – The Domain Dilemma.
  • Rolly Wasonga on The truth about estimation #5 – Nothing is wrong with my model!
  • Duncan Lee on The truth about estimation #5 – Nothing is wrong with my model!

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