5 - Reconciliation
Play • 11 min

Getting reconciliation wrong can lead to dire consequences for miners. Mine reconciliation is the practice of comparing the tonnage and grade of material processed by the mill with the tonnage and grade of ore in the reserve model of a deposit and with the tonnage and grade in the grade control models used to define ore in mining. Optiro's Director of Geology Ian Glacken explains what can go wrong and how we can aim to avoid issues.


In this episode:

0:47 What is reconciliation and how it applies to mining? 1:48 What happens when things go wrong? 2:29 If someone has made a poor forecast at the beginning, is there any way back? 3:33 What are the key aspects of reconciliation? 5:46 Why is reconciliation so complicated? Does it need to be? 7:08 What about the standards we need to adhere to? 8:07 Is this just the domain of geologists or are there others involved? 9:09 What are the key aspects of an effective reconciliation? 9:56 Where can people learn more about reconciliation?

For more information:


Standardising the Reconciliation Factors Required in Governance Reporting (2009) Fouet et. al Reconciliation principles for the mining industry (2012) H.M. Parker Optiro Reconciliation training course - https://www.optiro.com/training/reconciliation-getting-right-first-time/


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