I think should be significant increase, a larger pit could allow deeper open pit mining. The MRE used a cut off grade of 0.5% for OP, UG was 1%. They originally planned OP down to 220m and then UG down to 690m. No idea how the pit engineering could change the OP depth but could go much deeper and therefore include a lot more tonnage as cutoff grades change.
I think should be significant increase, a larger pit could allow...
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