Cheechoo Gold Project: Mineral Resource Estimate Update Underway Based on New Model
TSX-V: SOI
Cheechoo Gold Project: Mineral Resource Estimate Update
Underway Based on New Model
May 28, 2025
Montréal (Québec) - Sirios Resources Inc. (TSX-V: SOI; OTCQB: SIREF) (“Sirios”) is pleased to
announce that an update of the Mineral Resource Estimate (MRE) for its flagship Cheechoo Gold
Project in Eeyou Istchee James Bay, Québec, is well underway, with results anticipated as soon as
this summer. This update is driven by the adoption of a new game-changing geological and structural
model that significantly redefines the deposit’s potential.
A Transformative Geological Model
Developed in collaboration with leading consultants in resource modeling and applied structural
geology, the new model is grounded in a comprehensive analysis of drilling data and geological
structures. This work has uncovered previously unrecognized struc tural controls on gold
mineralization, resulting in a redefinition of key mineralized zones and corridors. An interactive 3D
viewer of the new model will be made available on Sirios’ website upon publication of the updated
MRE.
Key Anticipated Impacts
For the first time, the forthcoming resource estimate is expected to include an underground
component—representing a major advancement over the December 2022 estimate. This addition
paves the way for expanded resource development through future drilling initiatives.
“Our team’s dedication over the past year is coming to fruition as we integrate new insights and data
into the upcoming Mineral Resource Estimate,” stated Dominique Doucet, President and CEO of
Sirios Resources. “We are confident that the new estimate will showcase Cheechoo’s substantial
resource development potential and reinforce its status as a premier gold project in Québec.”
The MRE update is being conducted by PLR Resources Inc., a trusted geological consulting firm
founded by Pierre Luc Richard, a recognized expert in mineral resource estimation who has authored
and coordinated more than 100 technical reports under National Instrument 43-101.
Livestream Event: May 28
To provide further details on developments at the Cheechoo Gold Project and the ongoing resource
estimate update, Sirios will host a livestream event later today.
Attendees will have the opportunity to ask questions following the presentation. The livestream will
be held on Zoom, with sessions offered in both French and English:
Webinar in French: 1:00 p.m. (EDT)
https://us06web.zoom.us/j/83341809688?pwd=3d2f1f1WmzfDP7zF0FyeNpazoNXzra.1
Webinar in English: 2:00 p.m. (EDT)
https://us06web.zoom.us/j/88567968164?pwd=dwORJwp39XomdTZ25QMqycbm9baiWB.1
About the Cheechoo Project
Located less than 15 km from Dhilmar Ltd.’s Éléonore gold mine in Quebec’s Eeyou Istchee James
Bay territory, the Cheechoo Project —100% owned by Sirios —hosts an untapped gold deposit with
outstanding potential for expansion and development.
The 2022 Mineral Resource Estimate (MRE) reported, for an open-pit model:
• Indicated resources: 1.4 million ounces at an average grade of 0.94 g/t Au;
• Inferred resources: 500,000 ounces at an average grade of 0.73 g/t Au.
Underground mining scenarios have not been evaluated in this MRE.
Source: BBA, Mineral Resource Estimate Update for the Cheechoo Project, 23/12/2022
Learn more about Cheechoo at sirios.com/en/cheechoo
About Sirios
Sirios Resources Inc. (TSX -V: SOI; OTCQB: SIREF) is a Quebec -based mineral exploration company
focused on developing its 100% -owned Cheechoo Gold Project , located in Eeyou Istchee James Bay,
Canada.
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, majo r operators as well as financial experts
seeking reliable and realistic advice.
For more information, please contact:
Dominique Doucet, P.Eng., CEO
450-482-0603
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 o f 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; infl ation;
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.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies
of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
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