Montreal, Quebec - Sirios Resources Inc. (TSX-V: SOI; OTCQB: SIREF) ('Sirios') is pleased to announce that it has filed on SEDAR the 'Technical Report on the Cheechoo Project with an Updated Mineral Resource Estimate for the Cheechoo Gold Deposit, Eeyou Istchee James Bay, Quebec, Canada', with an effective date of July 1, 2025.
The report, prepared in accordance with NI 43-101 standards, was completed for Sirios by PLR Resources Inc.
Dominique Doucet, President and CEO of Sirios Resources, stated: 'I congratulate our technical team and consultants for the excellent work showcased in this technical report, which highlights the compelling potential of the deposit. Cheechoo continues to deliver: gold ounces are up, grades are up, and the exploration targets remain numerous and highly promising. We are excited to advance the project further and are already preparing the next steps.' The full technical report is now available on SEDAR+ under Sirios' profile, as well as on the Company's website at sirios.com/en/cheechoo. The key results of the 2025 Mineral Resource Estimate were summarized in Sirios' press release dated July 10, 2025.
Cheechoo Project Mineral Resource Estimate (MRE)
The updated Mineral Resource Estimate is based on 345 drill holes, totalling 82,717 meters, including 8,660 meters since 2022. This MRE introduces a new underground component and is based on a new geological model that has revealed previously underestimated, higher-grade zones within the deposit. An interactive 3D viewer of the new model is available at sirios.com/en/cheechoo.
The mineral resources disclosed in this press release conform to NI43-101 standards and guidelines and were prepared by independent qualified persons. The above-mentioned mineral resources are not mineral reserves as they do not have demonstrated economic viability. The quantity and grade of the reported Inferred Mineral Resources are conceptual in nature and are estimated based on limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological grade and/or quality of continuity. An Inferred Mineral Resource has a lower level of confidence relative to a Measured or Indicated Mineral Resource and constitutes an insufficient level of confidence to allow conversion to a Mineral Reserve. It is reasonably expected, but not guaranteed, that the majority of Inferred Mineral Resources could be upgraded to Measured or Indicated Mineral Resources with additional drilling. The National Instrument 43-101 Technical Report, including the mineral resources for the Cheechoo Project contained in this news release, will be delivered and filed on SEDAR by Sirios Resources Inc. within 45 days of the date of this news release.
About the Cheechoo Gold Project
The Cheechoo Gold Project is the flagship asset of Sirios Resources Inc., located in the Eeyou Istchee James Bay territory of Quebec, less than 15 km from the Eleonore gold mine. The project is 100% owned by Sirios and is recognized for its significant expansion and development potential, targeting both large-scale open-pit and higher-grade underground mining scenarios.
About the Eleonore Gold Mine
The Eleonore Mine is an underground gold operation located in the Eeyou Istchee James Bay region of Quebec, directly adjacent to Sirios' Cheechoo Property. Commercial production at Eleonore began in April 2015. In 2024, Dhilmar Ltd. acquired the mine from Newmont Corporation in a $795 million USD transaction and is now the current operator.
About PLR Resources
PLR Resources specializes in mineral resource estimates and project evaluations and offers a wide variety of services, from grassroots exploration planning to feasibility studies and mining operation optimization, serving clients that include juniors, major operators as well as financial experts seeking reliable and realistic advice.
Contact:
Dominique Doucet
Tel: 450-482-0603
Email: info@sirios.com
Web: www.sirios.com
Cautionary note regarding forward-looking statements
This news release contains 'forward-looking information' within the meaning of applicable Canadian securities legislation based on expectations. estimates and projections as at the date of this news release. Forward-looking information involves risks, uncertainties and other factors that could cause actual events, results. Performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Factors that could cause actual results to differ materially from such forward-looking information include, but are not limited to, capital and operating costs varying significantly from estimates; the preliminary nature of metallurgical test results; delays in obtaining or failures to obtain required governmental, environmental or other project approvals; uncertainties relating to the availability and costs of financing needed in the future; changes in equity markets; inflation; fluctuations in commodity prices; delays in the development of projects; the other risks involved in the mineral exploration and development industry and those risks set out in the Company's public documents filed on SEDAR at www.sedar.com. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.
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