Preliminary economic assessment
Reported project economics for the 2025 PEA.
- After-tax NPV (5% discount rate)
- 942.9US$M
- After-tax IRR
- 33.8%
- Initial capital
- 382.7US$M
- All-in sustaining cost
- 1,284US$/Ounce Au
Market cap / NPV unavailable: a recent share price, shares outstanding and matching exchange rate are required.
Metal prices the company used in this PEA
- Silver
- $29/oz
- Gold
- $2,350/oz
- Copper
- $4.5/lb
All prices in US dollars.
spot prices
Company-reported alternative price case from the same study.
- Gold price assumption
- 3,885 US$/oz
- Silver price assumption
- 47.92 US$/oz
- Copper price assumption
- 4.81 US$/lb
- After-tax NPV (5% discount rate)
- 2.253 US$B
- After-tax IRR
- 77.5 %
Production through the mine life
Payable metal by operating period, including reported ramp-up and partial years.
- Peak annual output
- 163,071
- Operating periods shown
- 15
oz · operating period 1
Includes reported ramp-up and partial years
Gold · oz per operating period
Operating period
View annual figures
| Operating period | Gold (oz) |
|---|---|
| 1 | 163,071 |
| 2 | 141,055 |
| 3 | 93,014 |
| 4 | 68,041 |
| 5 | 74,346 |
| 6 | 137,711 |
| 7 | 102,727 |
| 8 | 110,513 |
| 9 | 122,202 |
| 10 | 96,561 |
| 11 | 84,782 |
| 12 | 105,692 |
| 13 | 144,573 |
| 14 | 85,233 |
| 15 | 15,958 |
Table 22-4 annualized cash-flow schedule for the 2025 PEA; all series are payable metal rather than produced metal. The sequential operating-period index maps reported Years 1–15 to periods 1–15; Year 15 is the partial final production period within the 14.2-year production life. Years -2 and -1 are pre-production periods with no numeric production values and are excluded.
Source Technical Report on the Gabbs Gold-Copper Project · PDF page 359 · Nov 20, 2025
Mine life & production
- Mine life
- 14.2 Years
- Mine throughput per day after first year
- 24,658 Tonnes/day
- Average annual gold production
- 109,000 Ounces
- Average annual silver production
- 175,000 Ounces
- Average annual copper production
- 15,000 Tonnes
- Total by-product cash cost
- 468 US$/Ounce Au
Cash flow, capital & returns
- After-tax heap-leach payback period
- 2.4 Years
- Average annual cash flow after tax
- 578.7 US$M
- LOM sustaining capital
- 502.9 US$M
- LOM average total operating cost
- 21 US$/tonne processed
- Pre-tax NPV (5% discount rate)
- 1,136 US$M
- Pre-tax IRR
- 38.9 %
Study assumptions, grades & recoveries
- Gold price assumption
- 2,350 US$/oz
- Silver price assumption
- 29 US$/oz
- Copper price assumption
- 4.5 US$/lb
- Average gold recovery
- 88 %
- Average copper recovery
- 72 %
- Average silver recovery
- 56 %
- Average gold head grade
- 0.43 g/t
- Average silver head grade
- 1.09 g/t
- Average copper head grade
- 0.24 %
Constant-dollar, unlevered project cash-flow analysis based on 3rd Quarter 2025 costs, with oxide material heap leached and sulphide material milled.
Source Technical Report on the Gabbs Gold-Copper Project · PDF page 354 · Nov 20, 2025
Source Technical Report on the Gabbs Gold-Copper Project · PDF page 351 · Nov 20, 2025
Source Technical Report on the Gabbs Gold-Copper Project · PDF page 352 · Nov 20, 2025
Source Technical Report on the Gabbs Gold-Copper Project · PDF page 362 · Nov 20, 2025
