In this episode of Fresh Thinking by Snowden Optiro, Ian Glacken and Rayleen Hargreaves discuss their conference paper, "Enhancing Underground Mine Reconciliation: A Unified F and R Series Framework," co-authored with Tarrant Elkington and Arja Jewbali and presented at the AusIMM International Mining Geology Conference 2026 in Brisbane in April.
The conversation explores the challenges of applying traditional mine reconciliation frameworks to underground mining operations and introduces the R Series as an extension of the established F Series framework. Ian and Rayleen discuss why resource-to-reserve reconciliation matters, the importance of a common volume approach, and how improved reconciliation can increase confidence in resource models, modifying factors and production outcomes.
Topics covered include:
The F Series and R Series reconciliation frameworks
Why underground mine reconciliation is more complex than open pit reconciliation
The concept of a common volume for meaningful reconciliation
Insights from the Newmont Tanami case study
Resource, reserve and production reconciliation
Practical recommendations for improving underground reconciliation practices
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