One mistake alreadyI wrote:
Ref 4 stated that debottlenecking Ph1 and 2 will increase milling from 7.6 Mt up to 9.2 Mt per year. Ref 3 shows this mill rate was attained in Q2 and Q3 of 2023: Ph1+2 average of Q2 and Q3 2023 milling with no indication of electricity issues: 2.24 Mt/Q = 9.96 Mt/yr. Ph3 adds another 50 % capacity, so a total of 13.8 Mt/yr. This is the upper bound of what seems to be possible with consistent electricity supply etc.
This was faulty arithmetic. Based on the Ph1+2 = 2.24 Mt/Q = 8.96 Mt/yr, a 50 % increase due to Ph3 would take it to 13.44 Mt/yr mill throughput, not 13.8 Mt/yr. The midpoint is now 13.32 Mt/yr not 13.5. This would suggest a slightly lower potential increase of 29 % yr over yr, not 30 %. Not a big deal, but that's Sunday morning. Conclusions do not change - we should see a significant increase in copper production in 2025.