In this episode of Fresh Thinking, Senior Mining Consultant Pedro Ladeira sits down with Snowden Optiro General Manager Tarrant Elkington to explore the real value behind variable cutoff grades in mine planning. From NPV optimisation to stockpiling strategies and the practical challenges of implementation, this conversation is packed with insights that can help elevate your project’s performance.

Whether you're planning an open pit or underground mine, this episode unpacks how dynamic cutoff strategies can unlock significant long-term value - sometimes increasing NPV by 20% or more.

Key Moments:

0:34 – What is a marginal vs. optimised cutoff grade?  1:57 – Why higher cutoffs can increase NPV 3:59 – Open pit vs. underground implications 6:02 – The role of opportunity cost and processing constraints 8:46 – Costs and downsides of elevating cutoff grades 12:14 – Life-of-mine length and its influence on optimisation 16:03 – Stockpiling as a strategic asset 19:04 – Real-world impact: 20% NPV uplift 20:26 – Operational challenges and practical implementation

Takeaway: Cutoff grade optimisation isn’t just a technical tweak - it’s a powerful lever for mine value that deserves more attention in strategic planning.

If you would like to contact Tarrant and Pedro: contact(at)snowdenoptiro.com

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Snowden Optiro is a resources consulting and advisory group that provides independent advice, consulting and training to mining and exploration companies, their advisors and investors.

We help mine developers to advance their projects, mining companies to improve their operations and their professionals, and investors to de-risk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves.

Find out more at: https://snowdenoptiro.com/ Professional Development Training: https://snowdenoptiro.com/professional-development/