Challenger Gold Limited (ASX: CEL) has taken a decisive step towards becoming a cash-generating gold producer by announcing two key operational contracts for its Hualilán Gold Project in Argentina. On October 21, 2025, the Australian gold exploration and development company confirmed the signing of a production drilling agreement with THOR S.A. and an explosives services deal with global leader Orica Limited, both of which will support the ramp-up of its toll milling phase at the Hualilán site.
The announcement comes as the Casposo toll milling plant—central to Challenger Gold’s near-term strategy—has completed its refurbishment and commissioning. With early-stage processing of Casposo stockpiles already underway, Challenger Gold is now poised to commence mining activities at Hualilán. Blasthole drilling is expected to begin in early November 2025, with the first blast anticipated shortly thereafter. This aligns with the company’s previously outlined plan to capitalise on historically high gold prices and generate early-stage cash flows from near-surface mineralisation.
What makes the Orica and THOR agreements pivotal to Challenger Gold’s production strategy?
The contracts with Orica Limited and THOR S.A. are designed to de-risk the startup of toll milling operations and ensure efficient, on-time execution of drill-and-blast activities. THOR S.A., a leading Argentine drilling contractor, will provide 24 months of blasthole drilling services across approximately 3.2 million tonnes of ore and waste material. The agreement also includes the flexibility to operate up to three simultaneous work zones, providing Challenger Gold with operational agility.
Orica Limited will supply bulk explosives, initiating systems, and blasting services through 2028. Orica’s selection followed a competitive tender process and was attributed to its safety record, well-established logistics network in Argentina, and technical capabilities. Challenger Gold’s leadership underscored that these contractors not only meet operational standards but also support regional employment, training, and the development of local supply chains—particularly in the Ullum department of San Juan, where Hualilán is located.
Why is the Casposo toll milling plant a cornerstone of near-term production?
Challenger Gold’s Toll Milling Phase is underpinned by a binding agreement with Casposo Argentina Mining Limited, operator of the Casposo plant. The plant, located approximately 165 kilometres from Hualilán via existing roads, has an operational history of producing over 323,000 ounces of gold and 13.2 million ounces of silver. During its previous production phase, Casposo achieved recovery rates of 90 percent for gold and 79 percent for silver, with an average output of 40,000 ounces of gold and 1.6 million ounces of silver annually.
Following refurbishment, the Casposo facility has recommenced operations as of October 2025. The current toll milling agreement secures processing for a minimum of 450,000 tonnes of Hualilán mineralised material over the next three years. This allows Challenger Gold to monetise early-stage resources without the need to construct its own processing infrastructure in the short term, thus fast-tracking cash flows and funding future standalone development.
What are the projected economics of the toll milling plan under different commodity price scenarios?
Challenger Gold released a Pre-Feasibility Study in June 2025 outlining the financial impact of its toll milling strategy. At current spot prices of approximately US$4,000 per ounce of gold and US$40 per ounce of silver, the three-year toll milling plan is projected to deliver EBITDA of US$195 million, a post-tax NPV5 of US$110.4 million, and cumulative free cash flow of US$134 million.
Even under more conservative price assumptions—US$2,500 per ounce for gold and US$27.50 per ounce for silver—the plan generates EBITDA of US$88 million, with a post-tax NPV5 of US$50.5 million and free cash flow of US$56.7 million. The low capital intensity and competitive All-In Sustaining Cost (AISC) of approximately US$1,454 per ounce of gold equivalent position the project favourably, even in scenarios of moderate price softening.
How has Challenger Gold’s stock reacted and what is the market sentiment around the company?
Challenger Gold’s share price has appreciated significantly, rising 150 percent over the past 12 months. Year-to-date, the company has recorded a gain of 245.74 percent. Its sector ranking places it 151st out of 1,076 companies in the Basic Materials category, and 656th among all 2,297 companies on the Australian Securities Exchange.
Although the company does not currently have formal broker coverage, investor sentiment has remained upbeat, particularly among retail and small-cap investors. With no dividend and a modest earnings per share of A$0.017, the current appeal lies in the company’s leverage to gold prices and its strong project development cadence. The current market capitalisation stands at A$353.68 million with over 2.18 billion shares outstanding.
What makes the Hualilán Gold Project one of Argentina’s most advanced undeveloped assets?
The Hualilán Gold Project is located in San Juan Province, Argentina, a jurisdiction known for its favourable mining policies and established infrastructure. The project hosts a JORC-compliant Mineral Resource Estimate of 2.8 million ounces of gold equivalent, with 45.5 million tonnes at 1.3 grams per tonne in the indicated category and 12.4 million tonnes in the inferred category. Notably, a high-grade core of 9.9 million tonnes at 5.0 grams per tonne contributes 1.6 million ounces to the resource.
Challenger Gold’s exploration program includes over 220,000 metres of diamond drilling across more than 750 drill holes. Significant intercepts include 63.3 metres at 8.5 grams per tonne gold, 7.6 grams per tonne silver, and 2.8 percent zinc. The project remains open along strike and at depth, with multiple mineralised zones identified—including an intrusion-hosted gold system that returned intercepts of over 200 metres in recent drill campaigns.
How does the El Guayabo Gold-Copper Project fit into Challenger’s portfolio strategy?
While the Hualilán Gold Project remains the company’s primary focus, Challenger Gold is also progressing its El Guayabo Gold-Copper Project in southern Ecuador. Located near the 20.5-million-ounce Cangrejos project, El Guayabo covers 35 square kilometres and has reported a maiden Mineral Resource Estimate of 4.5 million ounces of gold equivalent. The resource is based on 34 drill holes totalling more than 22,000 metres, with mineralisation still open in all directions.
The company has launched an 8,000-metre follow-up drilling campaign to define additional mineralised zones and is evaluating options for strategic monetisation or spin-off of the asset. This approach is designed to retain focus and capital allocation toward Hualilán while unlocking value from its Ecuadorian exploration efforts.
What upcoming milestones could define Challenger Gold’s next growth phase at the Hualilán Gold Project?
Challenger Gold’s operational calendar is now focused on three near-term milestones. First, the completion of site mobilisation and initiation of blasthole drilling in early November 2025. Second, the execution of the first blast at Hualilán. Third, the commencement of gold-bearing ore processing at the Casposo plant and subsequent announcement of first gold production.
These events will likely shape investor sentiment and institutional entry in the months ahead. With the price of gold still hovering at elevated levels, Challenger Gold is positioned to benefit from a supportive macro environment while de-risking its path to full-scale mine development.
What are the most important takeaways from Challenger Gold’s toll milling phase launch and project update?
Challenger Gold Limited (ASX: CEL) has advanced its near-term production strategy at the Hualilán Gold Project in Argentina by locking in critical operational contracts and completing key infrastructure work. Below are the top highlights investors and analysts should focus on:
- Drill and blast contracts finalised: Challenger Gold has signed a 24-month drilling contract with THOR S.A. and a long-term explosives supply and blasting services deal with Orica Limited, ensuring safe and reliable mining execution.
- Casposo plant refurbished and operational: Toll milling has officially commenced, with Casposo now processing lower-grade stockpiles. Processing of Hualilán ore is expected to follow shortly.
- Production milestone approaching: Blasthole drilling is set to begin in early November 2025, with the first blast scheduled soon after. These are key steps toward achieving first gold.
- Strong economic returns expected: The toll milling phase is projected to deliver EBITDA of US$195 million and free cash flow of US$134 million over three years at current gold prices.
- Low-cost production profile: With an estimated AISC of US$1,454 per ounce of gold equivalent, Challenger Gold is positioned to operate well below spot prices.
- Hualilán’s scale and grade remain compelling: The project hosts 2.8 million ounces of gold equivalent in JORC-compliant resources, with a high-grade core of 9.9 million tonnes at 5.0 g/t AuEq.
- Positive market sentiment reflected in share price: CEL shares are up over 245 percent year-to-date, with strong retail interest despite the absence of broker coverage.
- Further catalysts on the horizon: Investors are watching for first gold production results, cost performance against guidance, and continued exploration success along Hualilán’s 30-kilometre strike.
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