Tintina Mines Limited Commences the 2025 Drilling Campaign at the Domeyko Sulfuros Project, Atacama Region, Chile
Tintina Mines Limited Commences the 2025 Drilling Campaign at the Domeyko
Sulfuros Project, Atacama Region, Chile
TORONTO, May 21, 2025 -- Tintina Mines Limited (“Tintina” or the “Company”) (TSXV: TTS) is pleased to announce the
commencement of its 2025 drilling campaign at the Domeyko Sulfuros Project, located in the Atacama Region of Chile. The
campaign is primarily aimed at supporting the development of a Preliminary Economic Assessment (PEA) under NI 43-101,
reinforcing the Company’s commitment to the technical and strategic advancement of this asset.
Details of the 2025 Work Plan
As part of the ongoing development of the Domeyko Sulfuros Project, Tintina Mines Limited has launched a drilling campaign
under its 2025 exploration program. The campaign includes a total of 6,000 meters of drilling, aimed at upgrading a portion of
the inferred resources to the measured and indicated categories. This work is supported by a prior gap analysis study, which
helped identify key opportunity areas to strengthen the project’s technical foundation.
In parallel, the Company will advance with geometallurgical studies, as well as metallurgical and geomechanical testing — all
critical components to support the preparation of the Preliminary Economic Assessment (PEA). It is worth noting that the
deposit was previously mined in its oxide and secondary sulfide enrichment zones, providing a valuable historical dataset of
technical, environmental, and community-related information that complements the current evaluation and enhances the
robustness of the ongoing analysis.
The PEA is expected to be completed by the end of 2025 and will provide a detailed analysis of the project's economics.
Domeyko Sulfuros Project
The Domeyko Sulfuros Project is an exploration property situated in the Atacama Region of northern Chile. The project
encompasses 75 mining concessions, covering an area of 10,056 hectares within the Dos Amigos mining district.
Strategically positioned 53 kilometers south of Vallenar, the property offers exceptional accessibility, located just 60
kilometers from the Pacific coast and less than one kilometer from the Pan-American Highway, and adjacent to the town of
Domeyko. This advantageous positioning significantly enhances its logistical potential. Its low-altitude setting, combined with
excellent connectivity and access to critical infrastructure such as electrical power, water, and logistical support, provides
substantial operational advantages.
From 1997 to 2015, the enrichment blanket at the Dos Amigos target was the focus of open-pit mining operations. During this
period, approximately 12 million tonnes of ore, with copper grades exceeding 0.85% (predominantly secondary sulfides), were
extracted and processed using heap leaching and solvent extraction-electrowinning (SX/EW) methods at an on-site facility.
In February 2024, Tintina completed a NI 43-101 Independent Technical Report for the Domeyko Sulfuros Project (see news
release dated February 15, 2024), providing a comprehensive overview of the technical characteristics of the property.
The most recent NI 43-101 report, issued in January 2025 and prepared by SRK Consulting Chile SpA, has defined an inferred
mineral resource of 320 Mt for the Domeyko Sulfuros Project, with average grades of 0.36% total copper (CuT) and 0.26 ppm
gold (Au) (0.51%* copper equivalent (CuEq)). The Dos Amigos deposit, located within the project area, hosts open
mineralization to the north and southeast, indicating significant potential for resource expansion (see news release dated
January 23, 2025).
*Price Cu = 4.15 US$/lb Price Au = 2,150 US$/oz
About Tintina Mines Limited
Tintina Mines is a Canadian-based company with over two decades of experience in the junior mining sector, focused in the
acquisition, exploration, and development of base and precious metal properties in South America and Canada. Recently,
Tintina expanded its portfolio with the addition of five new projects in Chile, following the acquisition of a majority stake in
Andean Belt Resources. Tintina is committed to advancing the exploration and development of the copper-gold (Cu-Au)
Domeyko Sulfuros Project in the Atacama Region of northern Chile. Tintina Mines Limited’s common shares are listed on the
TSXV under the symbol TTS.
For further information about Tintina Mines Ltd., please contact:
Mr. Jing Peng
82 Richmond Street East, Toronto, Ontario, M5C 1P1 - CANADA
Email: [email protected]
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of this release.
Forward-looking Statements
This press release contains forward-looking statements. Forward-looking statements involve known and unknown risks,
uncertainties and assumptions and accordingly, actual results and future events could differ materially from those expressed
or implied in such statements. You are hence cautioned not to place undue reliance on forward-looking statements. All
statements other than statements of present or historical fact are forward-looking statements. Forward-looking statements
include words or expressions such as “proposed”, “will”, “subject to”, “near future”, “in the event”, “would”, “expect”, “prepared
to” and other similar words or expressions. The forward-looking statements in this press release include, but are not limited to,
statements regarding the Company’s future operational goals and strategies. Where the Company expresses or implies an
expectation or belief as to future events or results, such expectation or belief is based on assumptions made in good faith and
believed to have a reasonable basis. Such assumptions include, without limitation: that the Company will be able to execute
on its intended business plans and strategies; that the Company will be able to conduct its intended exploration plans on its
recently-acquired property; and that the Company will be able to repay existing debt on the terms described herein or at all.
Factors that could cause future results or events to differ materially from current expectations expressed or implied by the
forward-looking statements include: general business, economic, competitive, political and social uncertainties; the state of
capital markets; failure to realize the anticipated benefits of the recent property acquisition described herein; risks related to
the mining industry generally; other unforeseen events, developments, or factors causing any of the aforesaid expectations,
assumptions, and other factors ultimately being inaccurate or irrelevant; and any risks associated with the ongoing COVID-19
pandemic. You can find further information with respect to these and other risks in filings made with the Canadian securities
regulatory authorities that are available at www.sedarplus.ca. The Company disclaims any obligation to update or revise these
forward-looking statements, except as required by applicable law.