I think they keep reserves for 12 years. They have resources beyond that to well over 20. It's pointless converting those resources to reserves. They will only do that when they need to. Noting that reserves especially are dependent on a determinedly considered estimate of commodity price and thus feed grade. (How do you do that properly beyond 12 years. One may be able to do if for gold because it is quasi money and you have a long-term bond rate for reference.
It's my considered opinion that you can think of the mine life in the same terms as the 20+ years used for US gold mines such as Barrick. I say that because Renison has been in operation on and off for over 100 years and I have been in MLX for those twelve years at least. I also take into account the opinion of Dr David Collins who did his PhD on Renison mineralization and was my supervisor for my Geoscience- Mineral Exploration Grad Dip. Capstone unit (project) on the tin mineralization style at Renison.
Now, I apologize if that's more than you wanted to hear but you have tilted yourself traineeinvestor and I thought you might benefit.
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