Cobre Limited has secured majority control of the Sierra Atacama Copper Project in Chile through a $60 million capital raise, marking its transition from explorer to producer. The company plans extensive drilling and operational upgrades to boost production and resource confidence.
- Acquired majority stake in Sierra Atacama via $60m capital raise
- Operating underground mine producing ~400t copper cathode monthly
- 40,000m drilling campaign aims for JORC resource conversion
- Ongoing exploration and development in Botswana’s copper projects
- New CFO appointed post-quarter to support growth
Transforming from Explorer to Producer in Chile
Cobre Limited (ASX:CBE) has taken a decisive step towards becoming a significant copper producer by securing a majority interest in the Sierra Atacama Copper Project in northern Chile. This move follows a two-tranche A$60 million capital raise conducted at A$0.15 per share, which saw the issue of over 400 million new shares. The capital raise was cornerstone-supported by Tribeca Investment Partners with a $15 million investment and attracted new institutional investors, underscoring the transformative nature of this acquisition.
The Sierra Atacama project, spanning approximately 15,500 hectares across 64 mining concessions in the highly prospective Antofagasta region, includes an operating underground mine currently producing around 400 tonnes of copper cathode per month. Cobre aims to rapidly optimise and expand production beyond 1,000 tonnes monthly, leveraging existing infrastructure such as a crushing circuit and solvent extraction-electrowinning (SX-EW) plant. The company also plans to develop large-scale open-pit operations to unlock further value.
This acquisition and capital raise signal a fundamental shift for Cobre, moving from an explorer to an operator with a sizeable copper asset in one of the world’s premier copper belts. The project’s proximity to major mining hubs and ports provides logistical advantages for export and supply chains.
Ambitious Drilling Program to Upgrade Resource Confidence
Following the acquisition, Cobre launched a substantial 40,000-metre drilling campaign combining diamond core, reverse circulation, and underground drilling. The objective is to convert existing Canadian NI 43-101 mineral resource estimates, currently considered foreign estimates, into JORC-compliant resources and reserves. This program also targets resource expansion between known deposits to support a larger open-pit operation and to delineate shallow starter pits for near-term production increases.
The project hosts high-grade copper zones with impressive assay samples, including underground ore samples exceeding 50% total copper along with significant silver and gold credits. The drilling will also test vertical and lateral extensions of high-grade chalcocite mineralisation, potentially adding significant value to the resource base.
Complementing drilling efforts, Cobre has completed an ultra-high resolution drone magnetic survey to map mineralised structures and diorite intrusives, aiding in geological modelling and drill targeting. Geological mapping and relogging of historical core are underway to build a detailed 3D geological model, enhancing resource estimation accuracy.
The company is also validating historical assay data through re-assaying and twinning drill holes to ensure data integrity, addressing past limitations in quality control standards.
Parallel Progress in Botswana and Western Australia
Cobre’s copper ambitions extend beyond Chile. In Botswana, exploration and development continue at the Okavango and Ngami Copper Projects. At Okavango, a 2,800-metre diamond drill program was completed with assays pending, and a further 3,500 metres of drilling has been approved by partner Sinomine International Exploration.
At Ngami, wellfield development is advancing ahead of constructing an In-Situ Copper Recovery (ISCR) demonstration plant. The project employs directional drilling and a sophisticated telemetry control system to monitor and manage groundwater flow, aiming to demonstrate hydraulic control of mineralised aquifers. Early drilling results from the Cosmos Target show encouraging copper and silver mineralisation continuity.
Meanwhile, Cobre’s Western Australia Perrinvale Project remains on hold with no substantive work during the quarter.
Financial Position and Corporate Developments
The capital raise has significantly bolstered Cobre’s cash position to A$58.6 million at quarter-end, providing ample runway for exploration, acquisition earn-in, capital expenditure, and working capital. Exploration expenditure for the quarter was A$3.1 million, primarily focused on Botswana projects.
Notably, Cobre appointed Mr Kaveen Bachoo as Chief Financial Officer shortly after the quarter, a move likely aimed at strengthening financial oversight as the company scales operations and navigates the transition to copper production.
This strategic capital raise and acquisition build on the company’s earlier announcements and due diligence, clarifying Cobre’s pathway to operational control and majority ownership of Sierra Atacama, including options to acquire remaining shares. The company’s plans to convert foreign resource estimates to JORC compliance and expand production capacity will be key milestones to watch in the coming months.
Given the scale and complexity of the Sierra Atacama Project, the upcoming assay results and progress on resource validation will be critical in shaping market confidence and the company’s valuation. The combination of operational optimisation, exploration upside, and financial restructuring points to a pivotal phase for Cobre as it aims to establish itself as a mid-tier copper producer.
The company’s ongoing work in Botswana, including the BHP partnership earn-in option and Sinomine’s increased investment, adds a layer of diversification and potential growth beyond Chile. These developments position Cobre as a copper-focused miner with multi-jurisdictional exposure and a clear development trajectory.
Investors following Cobre’s transformation will be keenly observing the drilling outcomes, resource upgrades, and operational milestones that will define the company’s transition from explorer to producer.
$60 million capital raise completion and 40,000m drilling campaign launch underpin this pivotal growth phase.
Bottom Line?
Cobre’s bold acquisition and capital raise set the stage for a significant copper production leap, but resource validation and operational execution will be the true tests ahead.
Questions in the middle?
- Will Cobre successfully convert the Sierra Atacama resource to JORC compliance within planned timelines?
- How will assay results from Botswana drilling influence the company’s multi-asset growth strategy?
- What operational challenges might arise in scaling Sierra Atacama from underground mine to open-pit producer?