TomaGold Commences Audio-Frequency Magnetotelluric (AMT) Survey at its Berrigan Mine Project
TSXV: LOT OTCPK: TOGOF PRESS RELEASE
TomaGold Commences Audio-Frequency Magnetotelluric (AMT)
Survey at its Berrigan Mine Project
Highlights
• Advanced AMT Survey Designed to Unlock District-Scale Discovery Potential
The survey aims to better define the district’s structural architecture, identify deep conductive
corridors associated with mineralized systems such as those observed in the Main and Deep
Zones at the Berrigan Mine Project, and prioritize high-potential drill targets.
• Survey Builds on Recent Exploration Success and Expanding Geophysical Program
This work builds directly on the successful Phase 2 drilling program and the broader geophysical
campaign launched on May 28, 2026.
• Comprehensive 7.5 Line-Kilometre Survey Grid Underway
The survey consists of a grid comprising 14 lines of variable length with measurement stations
spaced every 25 metres, for a total of 7.5 line-kilometres.
• Deep-Penetrating Technology Provides Valuable Subsurface Insights
AMT is a deep-penetrating geophysical method that maps subsurface resistivity contrasts using
natural electromagnetic fields.
• Phase 2 drilling program results still pending
Mineralization was consistently observed in the drill core recovered from all five extension holes
drilled, for which assay results are pending.
Montréal, Québec, June 23, 2026 ‒ TOMAGOLD CORPORATION (TSXV: LOT; OTCPK: TOGOF)
(“TomaGold” or the “Company”) is pleased to announce the commencement of an audio-frequency
magnetotelluric (“AMT”) geophysical survey at its Berrigan Mine project, located in the Chibougamau
Mining Camp of Québec. Conducted by Géophysique TMC, this AMT survey represents the next phase of
TomaGold’s systematic exploration strategy and follows the completion of the Phase 2 extension drilling
program, for which assay results from all five drill holes remain pending, as well as the launch of the major
prospecting and geophysical campaign announced on May 28, 2026.
The Berrigan system is characterized by high-grade polymetallic (zinc-gold-copper-silver) mineralization
hosted in conductive structures along major shear zones. Building on prior borehole EM results and recent
drilling successes, including significant intersections in the Berrigan Deep zone, the AMT survey is
expected to deliver a dist rict-scale 3D understanding of the structural architecture controlling
mineralization across the project area. The survey is expected to identify new conductive corridors,
potential extensions of known mineralization, and additional concealed massive sulphide targets at depth
(up to approximately 2 km). These insights will help refine exploration models and optimize future drill
targeting across TomaGold's consolidated Chibougamau property portfolio.
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Audio-frequency magnetotellurics is a passive geophysical technique that records natural variations in the
Earth's electric and magnetic fields across audio frequencies. It excels at imaging resistivity contrasts in
the subsurface at depths ranging from tens of metres to several kilometres, making it particularly well
suited for delineating deep structural features and conductive bodies associated with polymetallic
mineralization. The current AMT survey consists of a grid of 14 lines of variable length, with measurement
stations positioned every 25 metres along the lines, for a total coverage of 7.5 line -kilometres. The
contractor is responsible for line cutting and precise chaining at 25-metre intervals. This configuration is
expected to provide high-resolution data to map deep resistivity contrasts beneath the Berrigan Mine and
surrounding areas (see Figure 1).
David Grondin, President and CEO of TomaGold, stated: "We are excited to commence this AMT survey,
which represents a significant step forward in our systematic exploration strategy at Berrigan. The survey
is expected to provide a clearer understanding of the structural architecture controlling mineralization at
depth, while helping to identify new conductive corridors, potential extensions of known mineralization
and additional high-priority exploration targets. Together with our ongoing drilling and geoph ysical
programs, the results will help unlock the broader potential of our Chibougamau assets and guide the next
phase of value-creating exploration activities.”
Figure 1: AMT survey on the Berrigan Mine Project
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Progress Report from TomaGold's A^iliated Company
Carbon2Green Developments Inc., a private company in which TomaGold holds a 35% interest, together
with AM Resources Corp. (35%) and certain TomaGold directors and members of management (30%), has
recently begun establishing a portfolio of mining rights covering several peatland areas in Québec. The
Company is currently evaluating these assets as part of an initiative aimed at determining their economic
potential with a view to carbon credit monetization through the development of projects focused on the
conservation, restoration and environmental enhancement of peatlands. Over the coming weeks,
Carbon2Green intends to complete its preliminary evaluations and continue its discussions with various
stakeholders, investors, communities, interest groups and government representatives in order to gather
relevant information regarding the regulatory framework applicable to these assets and the optimization of
their value, which is considered to have significant potential.
About the Berrigan Mine Project
The Berrigan Mine property consists of 16 claims totalling 483 hectares located 4 km north-northwest of
the town of Chibougamau. TomaGold has an option to acquire 100% of the property from Chibougamau
Independent Mines Inc.
The property has been the subject of more than one historical estimate. Met-Chem Canada Inc. prepared
the most recent of these in April 2001 in a report titled: “Pre-feasibility study: Etude Conceptuelle, Projects
Berrigan and Tortigny” by Chuinard et al. In the report, a resource estimate completed using polygonal
estimation techniques stated 1.39 Mt grading 3.17% Zn and 1.77 g/t Au on the main Berrigan Mine zone.
No resource classifications were given for the resource (GM61359).
The mineral resource estimate presented above is historical in nature and was not prepared in accordance
with National Instrument 43-101 standards. Accordingly, the reader is cautioned not to rely on this
estimate, as the Company is not treating the estimate as a current mineral resource. The qualified person
has not done sueicient work to make the resource current. Substantial data compilation, verification, and,
potentially, additional drilling and resampling would be required by a qualified person before the historical
estimate could be classified as a current mineral resource. There can be no assurance that any portion of
the historical mineral resource will ultimately be confirmed or demonstrated to be economically viable.
For further information regarding the Berrigan Mine Project, please consult the press release dated
September 13, 2023.
Technical Disclosure
The technical content of this press release has been reviewed and approved by Jean Lafleur, P .Geo., Vice
President of Exploration of the Company, and Suzie Tremblay, P .Geo., Vice President of Operations at Explo-
Logik Inc. and a consultant to TomaGold, each acting as a Qualified Person under National Instrument 43-
101.
About TomaGold
TomaGold Corp. (TSXV: LOT, OTCPK: TOGOF) is a Canadian junior mining company focused on the
acquisition, exploration, and development of high-potential precious and base metal projects, with a
primary focus on gold and copper in Québec and Ontario. The Company’s core assets are located in the
Chibougamau Mining Camp in northern Québec, where it owns the Obalski gold-copper-silver project and
holds options to acquire 12 additional properties, including the Berrigan Mine, Brosnan, Radar and Dufault
projects. TomaGold also holds a 24.5% joint venture interest in the Baird gold property near the Red Lake
Mining Camp in Ontario. In addition, the Company has lithium and rare earth element (REE) projects in the
James Bay region, strategically positioned near significant recent discoveries.
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Contact:
David Grondin
President and Chief Executive Officer
(514) 583-3490
www.tomagoldcorp.com
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Cautionary Statement on Forward-Looking Information
This news release includes certain statements that may be deemed “forward -looking statements” . All
statements in this news release, other than statements of historical facts, that address events or
developments that the Company expects to occur, are forwar d-looking statements. Forward-looking
statements are statements that are not historical facts and are generally, but not always, identified by the
words “expects” , “plans” , “anticipates” , “believes” , “intends” , “estimates” , “projects” , “potential” and
similar expressions, or that events or conditions “will” , “would” , “may” , “could” or “should” occur. Although
the Company believes the expectations expressed in such forward -looking statements are based on
reasonable assumptions, such statements are not guarantees of future performance and actual results
may diIer materially from those in the forward-looking statements. Factors that could cause the actual
results to diIer materially from those in forward -looking statements include the potential results of
exploration and drilling activities, market prices, continued availability of capital and financing, and general
economic, market or business conditions. Investors are cautioned that any such statements are not
guarantees of future performance and actual results or developments may diIer materially from those
projected in the forward-looking statements. Forward-looking statements are based on the beliefs,
estimates and opinions of the Company's management on the date the statements are made. Except as
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