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Guardian Exploration Completes High-Resolution Airborne Geophysical Survey At Mount Cameron Project
Guardian Exploration Inc. has completed a high-resolution airborne magnetic and radiometric survey over its 100%-owned Mount Cameron Project, an exploration-stage silver-lead-zinc project located in the Mayo Mining District of central Yukon, Canada. The survey was completed by Precision GeoSurveys Inc. of Langley, British Columbia, using a helicopter-borne geophysical platform designed to acquire magnetic and radiometric data across the Project area. The survey totalled approximately 669 line-kilometres over a 30.3 km² block, flown on 108°/288° survey lines at 50 m spacing (tie lines at 500 m) and a nominal flight height of 40 m above ground, using a cesium-vapour magnetometer and a 21-litre NaI(Tl) gamma-ray spectrometer. The survey is expected to enhance the Company's understanding of the geological setting, distribution of lithological units, and structural controls associated with mineralization at Mount Cameron. Preliminary datasets received from the survey confirm complete coverage of the planned survey block and include both Total Magnetic Intensity and radiometric measurements. The Company expects to receive final processed geophysical products and interpretations in the coming weeks. Mount Cameron hosts numerous historical high-grade silver, lead and zinc occurrences and remains significantly underexplored by modern exploration methods. Guardian believes the combination of advanced airborne geophysics, detailed geological mapping and systematic exploration provides an excellent opportunity to identify additional high-priority exploration targets across the property. The Mount Cameron Ag-Pb-Zn Project is an exploration-stage polymetallic project containing several historical high-grade mineral occurrences. It is located within Yukon’s Mayo Mining District and comprises 154 Yukon quartz mining claims covering approximately 3,017 hectares. Yukon MINFILE and historical assessment reports describe the Project as hosting both structurally controlled silver-lead-zinc vein mineralization and carbonate replacement deposit-style mineralization along the eastern margin of the Keno Hill Silver District. The Project encompasses two significant historical mineral occurrences documented in the Yukon MINFILE database: Clark (MINFILE 106D 011) – classified by Yukon MINFILE as a Deposit, consisting of CRD-style Ag-Pb-Zn mineralization; and Cameron (MINFILE 106D 012) – classified by Yukon MINFILE as a Prospect, comprising a structurally controlled Ag-Pb-Zn vein and replacement system. Guardian’s geological team has compiled and digitized historical exploration, surface and underground drilling, and analytical data from available assessment reports for the Clark and Cameron occurrences using Leapfrog 3D modelling software. Preliminary compilation completed to date includes 104 drill holes, several trenches, and considers historic reported geological observations and interpretations. Investigation and confirmation of these historic results is one of the objectives of the 2026 surface exploration program and planned twinning of historic drill holes. Historical exploration results were reported by previous operators, including Bullion Mountain Mining Ltd. and Scurry-Rainbow Oil Ltd., and have not been independently verified. Reported lengths are drill-intersected or trench lengths and do not represent true widths, which are unknown. The From–To interval for the 190E trench was not reported in the source. Metric equivalents shown in parentheses are converted at 1 ft = 0.3048 m and 1 oz/ton (troy ounces per short ton) = 34.286 g/t. Intersections were selected to illustrate the tenor of the better-mineralized portions of the Clark occurrence, as reported in AR 014774, and are not necessarily representative of mineralization throughout the occurrence; lower-grade and unmineralized intervals are present in the historical dataset. Historic core stacked at the Clark occurrence will be examined, relogged, and resampled, subject to confirmation that the core is sufficiently intact and complete. The Company expects to provide additional updates throughout the exploration season, including progress on field activities, commencement of diamond drilling, and assay results as they become available. Guardian acknowledges that the Mount Cameron Project lies within the Traditional Territory of the First Nation of Na-Cho Nyäk Dun. The Company is committed to building a respectful, long-term relationship with the FNNND and the Mayo community through collaboration, transparency and shared benefits. Guardian will prioritize local employment and training opportunities, support procurement from Indigenous-owned businesses wherever practical, and maintain high standards of environmental stewardship throughout its exploration activities. The Company is committed to maintaining open and ongoing dialogue with the FNNND and local stakeholders as work advances. The scientific and technical information contained in this news release has been reviewed and approved by Steven Dudka, BSc., P.Geo., EGBC #21326, a consulting geologist to the Company who is a “Qualified Person” as such term is defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects. The Qualified Person has been unable to verify the historical exploration information, including drill results, reported in this news release. Although the Company considers these results relevant for exploration targeting, they should not be relied upon and are not necessarily indicative of future exploration results.