Project description
Scoping study vs BFS comparison
Base case vs spot price
Gold price sensitivity (after-tax NPV5%)
IRR positive down to $3,570/oz (–15% base, –24% spot). Viable with opex 107% above budget.
Annual gold production profile (koz)
Annual cashflow summary (US$M)
| Item | Y0 | Y1 | Y2 | Y3 | Y4 | Y5 | Y6 | Y7–11 | TOTAL |
|---|---|---|---|---|---|---|---|---|---|
| Gold production (koz) | — | 53 | 74 | 71 | 68 | 84 | 102 | 120 | 573 |
| Gold sales revenue | — | 221 | 306 | 295 | 282 | 347 | 425 | 326 | 2,377 |
| Total cash operating costs | — | 111 | 137 | 132 | 120 | 105 | 83 | 294 | 982 |
| Initial + sustaining capex | 275 | 28 | 6 | 3 | 1 | — | — | — | 313 |
| Pre-tax cashflow | –285 | 70 | 151 | 147 | 136 | 224 | 338 | 169 | 986 |
| Income taxes (US + CA) | 11 | 15 | 17 | 33 | 54 | 62 | 68 | 42 | 302 |
| After-tax cashflow | –285 | 67 | 146 | 126 | 108 | 179 | 274 | 163 | 779 |
| Cumulative after-tax | –285 | –219 | –73 | +53 | +160 | +340 | +613 | +779 |
Cumulative cashflow turns positive in Year 3. Post-tax payback period is 3.6 years from first production. Year 6 alone generates $274M post-tax cashflow at AISC of only $822/oz.
Taxation & royalties
Capital cost breakdown
Processing plant capex sub-breakdown
Electrical cost elevated by 10km 34.5kV overhead powerline to SoCal Edison ($10.4M). SAG/Ball mill acquired second-hand (2020-built, unused) — significant capital saving vs new purchase.
Operating cost breakdown (C1 & AISC)
Cost structure key insight
Year 6 is the standout year: 102koz at an AISC of only $822/oz, generating $274M post-tax cashflow in a single year — driven by high-grade South Pit ore (avg 2.19g/t) dominating the mill feed. The stockpile phase (Y7–Y11) carries higher AISC of $2,600–$2,877/oz at the low 0.41g/t feed grade, but remains cashflow positive above ~$3,000/oz. Operating cost sensitivity shows the project remains viable with opex up to 107% above budget — a very wide safety margin.
Mineral resource estimate (25 April 2026 — JORC 2012)
Ore reserve estimate (maiden — March 2026 — JORC 2012)
Deposit geology
Metallurgy & processing
Important resource context
The 2026 BFS Mineral Resource uses a 0.20g/t cut-off (vs 0.50g/t previously), expanding total tonnes from 27.1Mt to 44.5Mt while reducing average grade from 1.26g/t to 0.76g/t — with total ounces essentially flat at 1.08Moz vs 1.10Moz previously. This is not grade dilution. It reflects the block model capturing bulk-mineable material at lower grade within the optimised $4,200/oz pit shell. The Ore Reserve (the production-relevant number) uses the more conservative 0.25g/t cut-off, yielding 630koz at 0.95g/t — the figure underpinning all financial projections.
Execution timeline
Pre-construction work — current status
Long lead items — procurement risk
Project risk register
NPV upside not included in BFS model
Analyst bottom line
The bull case is straightforward: A world-class brownfields gold project with a 49.5% pre-tax IRR, 3.6-year payback, existing approvals, proven metallurgy, and substantial NPV upside from above-base gold prices. The project is IRR-positive down to $2,442/oz gold — a level not seen since 2020. Construction risk is materially lower than greenfields peers given the pre-existing plant footprint, acquired SAG/Ball mill, and FEED already underway since December 2025.
The key watchpoints: (1) Financing close — the US$186M+ project finance gap is the single most important near-term catalyst. Management says discussions are "advanced." (2) FID announcement — the Final Investment Decision has not yet been made; the BFS completion is the prerequisite. (3) Political continuity — the Trump administration's explicit support for Colosseum is a current tailwind that introduces regime-change risk over a 10-year mine life. (4) NPCA lawsuit — notably absent from the BFS risk register, suggesting Dateline considers the April 2025 BLM confirmation of existing mining rights as sufficient resolution of the permitting overhang.