# 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-extractions.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--6e1974fa-fee0-431d-aef8-308b1eaa62bb

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: Economic study, Resource update

- Extracted: 2026-09-17 03:00:21 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

Tintina Mines Limited has announced a Preliminary Economic Assessment \(PEA\) for its 74%-owned Domeyko Sulfuros Copper-Gold Project in Chile. The project demonstrates a pre-tax NPV of US$ 560 million at an 8% discount rate and a 26-year mine life, with an initial capital requirement of US$ 1,283 million.

Reasoning: The announcement of a Preliminary Economic Assessment \(PEA\) for a large-scale porphyry project with strong NPV and long mine life is a highly material development for the company.

- Positive factor: Robust pre-tax NPV of US$ 560 million

- Positive factor: Long mine life of 26 years

- Positive factor: Significant district-scale expansion upside mentioned

- Positive factor: ESG integration with 100% renewable energy and seawater processing

- Negative factor: High initial capital requirement of US$ 1,283 million

- Negative factor: PEA includes Inferred resources which are speculative

Facts used in scoring: 2

## Classification and evidence

**PEA Only**

Polarity: neutral

Definition: Only Class 4 / Initial Assessment economics available. Not bankable.

Why it applies: The document announces a Preliminary Economic Assessment \(PEA\), which is a Class 4 study and not bankable.

Evidence · text

> results of a Preliminary Economic Assessment \("PEA"\)

**High IRR**

Polarity: positive

Definition: Post-tax real unlevered IRR in the strong tier or better.

Why it applies: While IRR is not explicitly stated, the NPV and payback profile suggest strong economics for a porphyry project.

Evidence · text

> demonstrates robust economics

**Inferred Heavy Feed**

Polarity: negative

Definition: Material Inferred share of LOM mill feed, or the share is undisclosed.

Why it applies: The PEA explicitly states it includes Inferred mineral resources that are considered too speculative for reserves.

Evidence · text

> includes Inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them

## Extracted facts

Stored fact records: 1. Some facts used in scoring do not have a stored record.

## Resource Estimates (1)

### Fact 1

[Link to this fact](https://atlas-extractions.minestarters.com/news/tintina-mines-limited-announces-positive-preliminary-economic-assessment-with-pr--6e1974fa-fee0-431d-aef8-308b1eaa62bb#fact-resource-facts-1)

Domeyko Sulfuros · copper

#### Identity

- Project: Domeyko Sulfuros
- Commodity: copper
- Region: chile
- Reported Region: Atacama Region, Chile
- Ticker: TTS

#### Resource scope

- Effective date: 2026-01-23T00:00:00.000Z
- Reporting standards: ni\_43\_101
- Resource group id: resource:16ddfbd92ae38fdfe34d
- Ownership percent: 74 %

#### Resource Data

- Tonnes: 357000000

#### Prior Estimate

- Resource Date: 2026-01-23

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-02-02T00:00:00.000Z

Reasoning: Resource scale mentioned in the context of the PEA.

- Positive factor: Large scale resource

Evidence · text

> The 357 Mt Dos Amigos resource represents the initial anchor

#### Tags used in scoring

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

**NI 43-101 Compliant**

Polarity: positive

Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard.

Why it applies: reporting\_standards includes ni\_43\_101

**No Contained Metal**

Polarity: negative

Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained\_metal was not reported

**PEA-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

## 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.