In open pit mines there is often a substantial difference between what is finally produced compared to what was originally planned. This difference is real and expected because our knowledge about the orebody is not complete until it is fully mined. The quality of reconciliation reports depends on the quality (and quantity) of measurements we take throughout the value chain. A good practice is to build numerous measurement points throughout the line of production so that the information can be tracked with confidence. Many numbers used in reconciliation reporting are estimates that come with an associated margin of error. It is important to minimize that margin of error through multiple measurements. Remember the only real number is the money in our bank account. While there are some general publications about reconciliation guidelines, there is no generic guideline for the mining industry. In the author’s opinion, every mine must develop its own site-specific guideline that addresses the complexity of its orebody and the measurement capabilities installed on the site. And remember the reconciliation reporting in a mine is a process that needs time to mature.
Click here to view all presentations.
