# Tintina Mines Limited Announces Positive Preliminary Economic Assessment with Pre-Tax NPV of US$ 560 million and 26-Year Mine Life Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--c3b0db51-625b-4ac2-9874-7a13a28cdb1d Original source: https://money.tmx.com/en/quote/TTS/news/7404085273415182/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr Publisher: tmx Original announcement: 2026-02-02T12:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Tintina Mines Limited - Ticker: TTS - Exchange: TSX - Region: Atacama Region, Chile - Primary commodity: Copper - Secondary commodities: Gold - Document categories: Resource update, Metallurgy - Extracted: 2026-08-24 07:16:51 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Tintina Mines Limited has announced a positive Preliminary Economic Assessment \(PEA\) for its Domeyko Sulfuros Copper-Gold Project in Chile, reporting a pre-tax NPV of US$ 560 million and a 26-year mine life. The project is characterized by a large-scale porphyry system with significant exploration upside and a sustainable ESG strategy using renewable energy and raw seawater. Reasoning: The announcement of a positive PEA with robust economics and a long mine life for a large-scale porphyry project is a major milestone. - Positive factor: Strong pre-tax NPV of US$ 560 million - Positive factor: Long mine life of 26 years - Positive factor: Significant district-scale expansion upside - Positive factor: ESG integration with 100% renewable energy and seawater processing - Negative factor: PEA is preliminary in nature - Negative factor: Resource includes Inferred material which is speculative Facts used in scoring: 4 ## Classification and evidence **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. Why it applies: The PEA establishes the first formal economic baseline for the project. Evidence · text > The PEA provides a strong technical and economic foundation **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Multiple Qualified Persons from SRK Consulting are named and have approved the results. Evidence · text > has been reviewed and approved by Joled Nur Paredes... and Sophia Bascuñán Moraga ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Resource Estimates (4) ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--c3b0db51-625b-4ac2-9874-7a13a28cdb1d#fact-resource-facts-0) copper #### Identity - Commodity: copper - Ticker: TTS #### Resource Data - Category: inferred - Tonnes: 357000000 - Grade: 0.2 - Grade Unit: % TCu - Contained Metal: 945000 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-02T00:00:00.000Z Reasoning: The 357 Mt resource is the anchor for the project, though it is currently in the inferred category. - Positive factor: Large scale resource - Negative factor: Inferred category is speculative Evidence · text > The 357 Mt Dos Amigos resource represents the initial anchor of a broader porphyry system ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--c3b0db51-625b-4ac2-9874-7a13a28cdb1d#fact-resource-facts-1) gold #### Identity - Commodity: gold - Ticker: TTS #### Resource Data - Category: inferred - Tonnes: 357000000 - Contained Metal: 1500000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-02T00:00:00.000Z Reasoning: Gold is a major byproduct/co-product of the project's 26-year life. - Positive factor: Significant gold production over mine life - Negative factor: Inferred category is speculative Evidence · text > producing 945 kt \( 2.1 billion lbs.\) of recovered copper and 1.5 million ounces of gold ### Fact 3 [Link to this fact](https://atlas-staging.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--c3b0db51-625b-4ac2-9874-7a13a28cdb1d#fact-resource-facts-2) copper #### Identity - Commodity: copper - Ticker: TTS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-02T00:00:00.000Z Reasoning: 88.2% copper recovery is robust for a porphyry deposit. - Positive factor: Strong recovery for a porphyry Evidence · text > metallurgical recoveries of approximately 88.2 % for copper ### Fact 4 [Link to this fact](https://atlas-staging.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--c3b0db51-625b-4ac2-9874-7a13a28cdb1d#fact-resource-facts-3) gold #### Identity - Commodity: gold - Ticker: TTS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-02T00:00:00.000Z Reasoning: 64.6% gold recovery is noted as an area for potential optimization. - Negative factor: Relatively low gold recovery Evidence · text > metallurgical recoveries of approximately ... 64.6 % for gold ## 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.