Table 4: Metrics for the key Whittle Consulting runs and iterative static analysis of ReCYN™ benefits on the Base Case schedule
Iterative Static Analysis on Base Case Optimised
Full Prober EO – Base Case Optimised
Full Prober EO - ReCYN™ Optimised
STEP 1 CN Recovery (+ ReCYN™ Capex)
Overall Delta
STEP 2 Detox Savings
STEP 3 Silver Uplift
STEP 4 Copper
LOM Outcomes
Cumulative NPV delta from Base Case Optimised ($US)
n/a
+$24.4M
+$48.4M
+$60.3M
+$73.4M
+$126.9M
+$126.9M
Year of Max NPV
2028 144.7
2028 144.7
2028 144.7
2028 144.7
2028 144.7
2030 170.2
+2 years +17.6% +10.0% +26.7%
Total Rock Movement (Mt)
Gold Produced (MOz) Silver Produced (MOz)
2.8
2.8
2.8
2.8
2.8
3.1
17.0
17.0
17.0
18.7
18.7
21.6
Copper Cathode product (t)
-
-
-
-
4,652
7,905
+7.9kt
ROM & Stockpile Tonnes Processed (Mt) Average cyanide-soluble copper (ppm)
64.0
76.0
+18.9%
85.86
122.33
NB: Enterprise Optimisation was based on 2016 reserves. Ounces and mine life at Martabe have subsequently been extended with resources and reserves updates
ReCYN™ Case Study – Martabe Operations
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