Challenger Gold has set early 2029 as the target for commercial production from a stand-alone heap leach operation at its Hualilán project in Argentina. The roadmap brings engineering, drilling and financing into sharper focus, but still depends on a US$15 million debenture refinancing and a much larger project funding package.
- Early 2029 target for Phase 1 heap leach production
- US$267 million estimated pre-production capital in the 2026 PFS
- US$15 million convertible debenture refinancing planned
- 35,000-metre drilling campaign underway with four rigs
- RIGI application targeted for submission by September 2026
Hualilán Roadmap Sets Early 2029 Production Target
Challenger Gold Limited (ASX:CEL) has put a date on its central ambition: commercial production from the Phase 1 heap leach operation at the Hualilán Gold Project in San Juan, Argentina, by early 2029. The target marks a shift in emphasis from advancing a development asset to preparing a stand-alone mining and processing operation, with the company’s new leadership team making Hualilán its primary objective.
The plan is built around the 2026 Pre-Feasibility Study, which outlined 1.8 million gold equivalent ounces over a 14.25-year mine life and average annual production of 135,000 gold equivalent ounces after the first two years. The staged design begins with heap leaching before a flotation circuit is added roughly two years later, with pre-production capital estimated at approximately US$267 million including contingency.
Engineering Moves Ahead of 2027 Construction Ramp-Up
Challenger has appointed BBA Consultants to undertake detailed engineering across the mine, heap leach pad, processing facilities and site services. The company is bringing forward engineering, procurement of long-lead equipment and early earthworks, including the mining camp, access roads and main gate, ahead of a planned construction ramp-up in the second half of 2027.
Several technical changes remain under review. Metallurgical work is assessing whether heap leach recovery could rise to 74.7% from the 69.7% assumption in the previous study, while a processing trade-off is comparing a Merrill-Crowe circuit with the planned ADR design. Third-party financing and construction of the power connection could also remove approximately US$48 million from Challenger’s upfront development funding requirement, although these potential benefits have not yet been confirmed.
Drilling Targets Resource Growth and Reserve Conversion
A 35,000-metre drilling program is now underway with four rigs operating. The campaign is focused initially on and around the existing open-pit footprint, targeting extensions to known mineralisation, conversion of resources to reserves and mine-plan optimisation. Challenger also says improved geological understanding could allow some material currently classified as waste to be converted into economically recoverable ore.
The company expects to provide an exploration update in the fourth quarter of 2026, with updated Mineral Resource and Ore Reserve estimates targeted for the second half of 2027. A separate NI 43-101 technical report prepared by BBA is expected in the first quarter of 2027 and is intended to incorporate the results of the optimisation work.
Refinancing Remains the Immediate Funding Test
The nearer-term financial hurdle is the planned refinancing of Challenger’s US$15 million convertible debenture, which matures in September 2026. If completed, the company expects cash on hand and proceeds from the new debenture to cover exploration, corporate obligations and Phase 1 activities through mid-2027. Challenger is targeting a full project financing plan by that point, but the announcement does not confirm either the refinancing or the larger development package.
Challenger is also preparing an application under Argentina’s Régimen de Incentivo para Grandes Inversiones, or RIGI, by the end of September. The company expects confirmation in the first half of 2027 and says the regime could provide tax, depreciation, customs, VAT and foreign exchange benefits. Eligibility requires more than US$200 million of qualifying investment, with Challenger estimating that about US$30 million of historical Hualilán investment may count towards the threshold.
Toll Milling Forecasts Superseded by Stand-Alone Plan
The company has clarified that production targets and financial forecasts from its 2025 toll milling Pre-Feasibility Study are superseded following its move away from the third-party toll treatment model. The May 2026 stand-alone PFS is not affected, Challenger says, because it was prepared using the mineral resource remaining after the planned toll milling.
Small-scale mining completed in 2026 has produced an ore stockpile of 79,897 tonnes grading 0.72 grams per tonne gold, while discussions continue around a potential Ore Purchase Agreement. How much material could ultimately be sold under such an arrangement, and whether it changes the mine plan, will be assessed through the current optimisation work. The next hard evidence points are the refinancing, RIGI submission, fourth-quarter drilling results and the early 2027 technical studies.
Bottom Line?
The roadmap gives Hualilán a clearer path to early 2029 production, but that path narrows quickly if the September debenture refinancing or the mid-2027 project financing plan slips.
Questions in the middle?
- Will Challenger complete the US$15 million debenture refinancing before its September maturity?
- Can the optimisation studies convert the potential recovery and infrastructure savings into confirmed project economics?
- Will drilling expand reserves enough to support the proposed mine schedule and future flotation expansion?