Key Highlights
- Cobre Ltd (ASX:CBE) was trading at A$0.215, down 10.42%, during the 23 October 2026 trading session.
- On 21 October 2026, the company said it secured about 150,000 tonnes of copper oxide material from ENAMI at about US$9 per tonne delivered.
- The company also said an on-site copper recovery programme has commenced across historical leach pads and ponds at Sierra Atacama.
Cobre Ltd (ASX:CBE) shares were trading at A$0.215, down 10.42%, during the 23 October 2026 trading session, compared with the S&P/ASX 200 (XJO), which was at 8,760.50, down 0.37% (32.70 points) at 1:16 pm AEDT. Cobre is a copper company whose activities centre on the Sierra Atacama Copper Project in Chile's Antofagasta Region, where it operates leach and solvent extraction-electrowinning (SX-EW) infrastructure. In an announcement released on 21 October 2026, the company said it is advancing two strategies to lift utilisation of that infrastructure: securing low-cost regional feed from Empresa Nacional de Minería (ENAMI) and progressing an on-site copper recovery programme.
Latest Developments
ENAMI Feed Agreement
On 21 October 2026, Cobre said it had entered into an agreement to purchase approximately 150,000 tonnes of crushed-leached copper oxide material, grading about 0.65% copper, from a stockpile held by ENAMI. The company said the purchase and delivery cost is about US$9 per tonne, made up of US$4 per tonne for the material and US$5 per tonne for delivery. The stockpile is within 55km by road of Sierra Atacama, and Cobre plans to transport around 30,000 tonnes per month, blending it with ore from its underground operations.
Column leaching testwork on the material returned 58% copper recovery, according to the announcement. For planning, the company is applying a more conservative recovery assumption of about 50% at industrial scale.
On-Site Copper Recovery Programme
The company said on 21 October 2026 that two workstreams have commenced. The first is re-leaching of historical stacked leach pads, where initial irrigation trials generated pregnant leach solution grading 2 g/L copper. Cobre said simple volumetric estimates suggest the pads may contain in excess of 10 million tonnes of material. The company cautioned that these estimates do not constitute a Mineral Resource.
The second workstream involves reprocessing copper-rich material in historical lixiviant ponds, with first copper production from this programme targeted by the end of the quarter, according to the announcement. The company said it intends to assess additional techniques, including injection leaching, during the December 2026 quarter.
Management Comments
Chief Executive Officer Adam Wooldridge said Sierra Atacama positions Cobre to establish a regional copper processing hub in a district with limited electrowinning capacity. The company also said all of the initiatives are expected to have relatively low acid requirements.
About Cobre Ltd
Cobre Ltd is an ASX-listed company (ASX: CBE, CBEO) with offices in Sydney. In February 2026, the company announced a A$60 million raising to acquire a majority interest in the Sierra Atacama Copper Project in Chile's Antofagasta Region. Subsequent announcements listed in the company's release include a 29 June 2026 update on consolidating its position in the Sierra Atacama copper district, a 6 July 2026 announcement that the mine delivered its first positive cash flow, and a 7 July 2026 announcement that Cobre increased its ownership of the project. The company describes a regional processing hub strategy built around existing leach and SX-EW infrastructure.
Related Sector Context
Cobre operates in copper production and development within the ASX Mining sector, with its operating asset located in Chile. The company's announcement referred to a limited electrowinning capacity in the district and to a high acid-price environment, noting that its initiatives are expected to have relatively low acid requirements. The company said it is applying its existing leach and SX-EW circuit to third-party feed and to legacy material on site. For reference, the S&P/ASX 200 was at 8,760.50, down 0.37%, at 1:16 pm AEDT on 23 October 2026, a smaller move than that of Cobre shares.
Risks to Weigh In
- The historical leach pad Volume estimates are not a JORC Mineral Resource, and the company said it has not yet done sufficient work to define tonnage and grade.
- The ENAMI material is subject to grade variance of 0.5 to 1.1% copper, and the company's industrial-scale recovery assumption of about 50% is below the 58% laboratory result.
- Re-leaching of the historical pads is at the trial stage, and the company said it will optimise irrigation rates and solution chemistry before assessing further techniques.
- Operations depend on underground ramp-up and planned open-pit expansion, which the company has not yet completed.
- The company noted acid prices are currently high, which is relevant to leaching costs.
Catalysts on Watch
- First copper production from the historical pond reprocessing programme, targeted by the end of the quarter.
- Delivery of ENAMI material at about 30,000 tonnes per month.
- Assessment of injection leaching and other recovery techniques during the December 2026 quarter.
- Results of the staged programme to assess scaling up re-leaching of the historical pads.
- Underground ramp-up and open-pit expansion progress at Sierra Atacama.
Where Things Stand
Cobre shares were trading at A$0.215, down 10.42%, during the 23 October 2026 trading session, against a 0.37% decline in the S&P/ASX 200. The company's latest announcement, dated 21 October 2026, outlined an ENAMI feed agreement and two on-site recovery workstreams at Sierra Atacama. Cobre has indicated that further updates will follow as the programmes progress.
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