Tintina Mines LimitedT
Tintina Mines Limited (TSXV: TTS) is advancing the Dos Amigos copper-gold porphyry project -- renamed from Domeyko Sulfuros per the company's own 25 Aug 2026 release, reflecting the historical name associated with the property's oxide project -- in Chile's Atacama Region, a brownfield site with prior oxide operations. A Preliminary Economic Assessment outlined a potential 25-year open-pit operation producing approximately 37,000 t copper and 57,000 oz gold in concentrate annually. In June 2026 the company announced a C$91 million subscription-receipt placement and strategic partnership with the Gignac family and Japan's Sumitomo Corporation (with a ~C$14M cornerstone investment from Franco-Nevada Corporation) to fund the project toward a Final Investment Decision (~C$55M) and to acquire the remaining 26.25% minority interest in its Chilean operating subsidiary Andean Belt Resources SpA (ABR) from entities controlled by Chairman Juan Enrique Rassmuss (~C$36M / US$26.25M). That transaction completed on 25 August 2026: Tintina had held 73.75% of ABR beforehand and now owns 100% of ABR and, indirectly, 100% of the project. The anchor investor, GMC SPV Equity 01 Inc. -- an equal partnership between Sumitomo Corporation and the Gignac family -- holds approximately 25% of Tintina's issued and outstanding common shares (~38% partially diluted, assuming exercise of its 71,000,000 warrants), and G Mining Services has been appointed engineering, development and construction contractor on arm's-length terms.
Notable vs. Peers
- Financials score of 2.9/10 is weaker than the peer average of 5.5/10.
Lifecycle Milestones
Not in place: mill. Not yet determined: tailings facility.
Jurisdiction (40%)8/10
The Dos Amigos (formerly Domeyko Sulfuros) project is in Chile's Atacama Region, one of the world's premier copper jurisdictions, with a long, stable regulatory and fiscal framework. The only discount is the ordinary permitting and consultation timeline for a new Chilean copper project that is not brownfield-permitted.
Infrastructure (40%)6.4/10
No confirmed mill, confirmed road access, and confirmed grid power at Dos Amigos (formerly Domeyko Sulfuros) Copper-Gold Project, Atacama Region, Chile; tailings facility not yet researched, counted at a neutral 5/10 until established.
Nearby producing mine (20%)Not yet researched
No producing mine within 50 km in our reference list (nearest listed: Veladero (Barrick Mining Corporation / Shandong Gold), 107 km). That list doesn't cover every mining district yet, so a longer distance isn't scored as remote.
Acquisition Susceptibility
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal in the research, a producer that already owns part of the company, is scored from its disclosed strategic shareholders. A producer that is a joint-venture or earn-in partner on the project, rather than a shareholder, isn't captured yet.
How this score is built
- Disclosed pending dealSub-score: Not scored
No pending acquisition or merger disclosed (checked)
Not scored: having no deal in flight isn't held against a company.
Weight 26.25% - Producer's strategic stakeSub-score: Not scored
No producer stake on file; largest strategic holder is GMC SPV Equity 01 Inc. (25%) See holders
Not an operating producer, so it isn't the toehold-then-takeout pattern the research documents; a missing producer stake isn't held against a company.
Weight 25% - Distance to a producing mineSub-score:3.1/10
Nearest producing mine: Veladero (Barrick Mining Corporation / Shandong Gold), 107 km
10 next to a producing mine, 8 at 20 km, 5 at 50 km, 0 beyond 200 km.
Weight 22.5% · 46% here - Lifecycle stageSub-score:6/10
Stage: Preliminary Economic Assessment
Feasibility and permitting score 10, where deals cluster, and production 5.5; earlier stages score less, down to 1 at grassroots.
Weight 15% · 31% here - JurisdictionSub-score:8/10
Chile: jurisdiction score 8/10
Our jurisdiction score, used as is: higher means lower political and permitting risk.
Weight 6.75% · 14% here - CommoditySub-score:8/10
Primary commodity: Copper
Gold 10, copper 8, silver 5, nickel and uranium 4, others 2: most majors' deals are for gold.
Weight 4.5% · 9% here
Weight is each input's share of the full score. “Here” is its share of this company's score: inputs that aren't scored are left out and the rest re-weighted, never counted as zero.
Your Rankings
Management Team
Chairman and Director of Tintina Mines Limited (previously also served as Interim CEO from 26 Feb 2025, then CEO from 27 Aug 2025 until Claude Dufresne's appointment 24 Aug 2026). 25+ years managing and investing in exploration and mining businesses, mainly in Chile, Peru and Canada. Studied industrial engineering, Universidad Católica (Chile).
CEO of Tintina Mines Limited, appointed effective 24 Aug 2026 following completion of acquisition and financing transactions first announced 2 Jun 2026. Also Partner and CEO of G Mining Capital; formerly President and CEO of NioBay Metals. 30+ years mining-industry experience spanning operations, project development and metals/minerals marketing. Mining Engineering degree, Université Laval.
CFO of Tintina Mines Limited, appointed effective 24 Aug 2026. 20+ years managing exploration and development-stage assets through to operations; most recently CFO of SolGold plc (2023-2026). CPA, CA (PwC); Honours BBA, Wilfrid Laurier University.
Director of Tintina Mines Limited. 20+ years in mining; McGill University mining engineering degree. Served as Project Director for the Merian Project (Newmont Mining) and the Fruta del Norte Project. Member, OIQ and CIM.
Director of Tintina Mines Limited, appointed effective 27 Aug 2025. 20+ years in finance, focused on natural resources. Chairs Invercap and holds board positions at CEMIN Holding Minero and Grupo Olympic; previously at UBS AG. CFA charterholder.
Director of Tintina Mines Limited. General Manager, Non-Ferrous Metals Development Business Unit at Sumitomo Corporation (since 2003), leading copper business development and investments; prior experience at Minera San Cristóbal, Bolivia. MBA, London Business School; engineering degree, Tokyo University.
Director of Tintina Mines Limited. 25+ years managing and investing in exploration and mining businesses. Former Regional Head of Exploration, Americas at Anglo American (1998-2015). Geology degree, Universidad de Chile; M.Sc. Mineral Exploration, Imperial College.
VP Exploration of Tintina Mines Limited. 18 years in mineral exploration, mineral-resource estimation and technical due diligence; Senior Geologist to VP-Geology at G Mining Services. Qualified Person under NI 43-101 and JORC.
VP Corporate Development & IR of Tintina Mines Limited. 15+ years mining and investment experience across operating and investment roles; former mining engineer on the African Copperbelt. MSc Metals & Energy Finance, Imperial College London; BEng Mining Engineering, Camborne School of Mines.
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
No smart-money tracking (institutional/large-investor activity) for this miner yet — this is a planned feature, not live data.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
Tintina Mines is advancing the Dos Amigos copper-gold porphyry project, renamed from Domeyko Sulfuros in August 2026, a brownfield site with past oxide operations in Chile's Atacama Region. Its resource (effective 23 January 2026) contains 348,823 t of copper in measured and indicated resources (54,635 t measured, 293,865 t indicated), along with gold, plus 868,951 t of copper inferred. The 2026 preliminary economic assessment shows an after-tax NPV8% of US$328M, with initial capital of US$1.28B and a 26-year mine life producing about 37,000 t of copper and 57,000 oz of gold a year in concentrate. On 25 August 2026 Tintina completed a C$91M placement and strategic partnership with the Gignac family and Sumitomo Corporation, with Franco-Nevada as a cornerstone investor, and bought the remaining 26.25% of its Chilean subsidiary to own the project outright. G Mining Services has been appointed engineering, development and construction contractor.