# CBE: Cobre Signs Agreement with ENAMI Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/cbe-cobre-signs-agreement-with-enami--c737a0cc-cec9-4183-b818-7ac8c2252e1b Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03154870 Publisher: asx Original announcement: 2026-10-20T21:18:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-20T22:41:36.119Z Atlas analysis updated: 2026-10-20T22:41:36.119Z - Company: Cobre Limited - Ticker: CBE - Exchange: ASX - Region: Chile - Primary commodity: Copper - Secondary commodities: None reported - Document categories: Agreement transaction, Metallurgy - Extracted: 2026-10-20 22:41:36 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Cobre Limited has secured an agreement to purchase ~150,000t of low-cost copper oxide material from ENAMI to supplement Sierra Atacama production. Additionally, the company has commenced two on-site metallurgical workstreams to recover copper from historical leach pads and lixiviant ponds using existing SX-EW infrastructure. Reasoning: The announcement details a strategic agreement for low-cost feed and the commencement of metallurgical recovery programs to boost plant utilization. - Positive factor: Securing low-cost regional feed from ENAMI - Positive factor: Commencement of on-site copper recovery from historical ponds and pads - Positive factor: Low acid consumption requirements for new feed and recovery streams - Positive factor: Utilization of existing SX-EW infrastructure - Negative factor: ENAMI material recovery \(58%\) is lower than current plant performance - Negative factor: Historical leach pad material is not yet a JORC compliant resource Facts used in scoring: 4 ## Classification and evidence **Agreement Transaction** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: Company entered into an agreement to purchase 150,000t of copper oxide ore from ENAMI. Evidence · text > Cobre has entered into an agreement to purchase approximately 150,000 tonnes grading approximately 0.65% Cu **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The material is intended for processing through existing leach and SX-EW infrastructure. Evidence · text > existing leach and solvent extraction–electrowinning \(SX-EW\) infrastructure **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("column leach"\) **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) **Multi-Domain Tested** Polarity: positive Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed. Why it applies: 2 distinct composites were tested ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Metallurgical Results (4) ### column leaching [Link to this fact](https://atlas-staging.minestarters.com/news/cbe-cobre-signs-agreement-with-enami--c737a0cc-cec9-4183-b818-7ac8c2252e1b#fact-metallurgical-facts-0) Sierra Atacama · copper #### Identity - Project: Sierra Atacama - Commodity: copper - Region: chile - Reported Region: Chile - Ticker: CBE #### Test Work - Program Status: optimization - Test Type: column leaching - Sample: ENAMI stockpile \(crushed-leached copper oxide ore\) #### Recovery - Recovery: 58 % - Recovery Basis: actual\_test - Head Grade: 0.65 - Head Grade Unit: % #### Reagents - Acid: 45 kg/t #### Lab - Laboratory: Sierra Atacama metallurgical laboratory #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Metallurgical column leaching testwork on the ENAMI material. - Positive factor: Column leach test successful - Negative factor: Recovery \(58%\) is moderate compared to current plant performance Evidence · text > Metallurgical column leaching testwork undertaken on the ENAMI material has returned 58% copper recovery, with laboratory acid consumption of approximately 45 kg/t. #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 58% is below the weak band \(80%\) ### Fact 2 [Link to this fact](https://atlas-staging.minestarters.com/news/cbe-cobre-signs-agreement-with-enami--c737a0cc-cec9-4183-b818-7ac8c2252e1b#fact-metallurgical-facts-1) Sierra Atacama · copper #### Identity - Project: Sierra Atacama - Commodity: copper - Region: chile - Reported Region: Chile - Ticker: CBE #### Test Work - Sample: ENAMI stockpile \(projected industrial scale\) #### Recovery - Recovery: 50 % - Recovery Basis: theoretical - Head Grade: 0.65 - Head Grade Unit: % #### Reagents - Acid: 30 kg/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Conservative recovery and acid consumption assumptions applied for industrial scale planning. - Negative factor: Conservative assumption used for planning Evidence · text > For planning purposes, Cobre is applying a more conservative ~50% recovery assumption at industrial scale with bulk acid consumption of 30 kg/t. #### Tags used in scoring **Theoretical Recovery Only** Polarity: negative Definition: Only theoretical or liberation-derived recovery reported, with no actual test result. Why it applies: recovery\_basis is theoretical **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 50% is below the weak band \(80%\) ### Fact 3 [Link to this fact](https://atlas-staging.minestarters.com/news/cbe-cobre-signs-agreement-with-enami--c737a0cc-cec9-4183-b818-7ac8c2252e1b#fact-metallurgical-facts-2) Sierra Atacama · copper #### Identity - Project: Sierra Atacama - Commodity: copper - Region: chile - Reported Region: Chile - Ticker: CBE #### Test Work - Sample: Historical lixiviant ponds \(sediment/precipitates\) #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Commencement of a programme to recover copper from historical lixiviant ponds. - Positive factor: Utilizes existing infrastructure - Positive factor: Minimal additional capital required Evidence · text > Reprocessing copper-rich material contained within historical lixiviant ponds has commenced ### surface irrigation [Link to this fact](https://atlas-staging.minestarters.com/news/cbe-cobre-signs-agreement-with-enami--c737a0cc-cec9-4183-b818-7ac8c2252e1b#fact-metallurgical-facts-3) Sierra Atacama · copper #### Identity - Project: Sierra Atacama - Commodity: copper - Region: chile - Reported Region: Chile - Ticker: CBE #### Test Work - Test Type: surface irrigation - Sample: Historical stacked leach pads #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Commencement of re-leaching trials on historical stacked leach pads. - Positive factor: Successful generation of copper-rich PLS in early trials - Negative factor: Material is not yet a JORC compliant resource Evidence · text > Re-leaching trials have commenced on the extensive historical stacked leach pads with initial irrigation trials generating PLS grading containing 2 g/L Cu. ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.