Vanguard Mining Identifies Two New Gold-Copper Soil Anomalies at Brussels Creek as Gold Trades Higher and Copper Fundamentals Strengthen

Vancouver, BC – TheNewswire – February 27, 2026 – Vanguard Mining Corp. (“Vanguard” or the “Company”) (CSE: UUU | OTCID: UUUFF | FSE: SL51) is pleased to announce two new anomalous zones identified from its 127-sample soil geochemical survey for its 100%-owned Brussels Creek Gold-Copper-Palladium Project (“Brussels Creek”), located in the highly prospective Kamloops Mining District of British Columbia.

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Figure 1:  Brussels Creek location and proximity to New Afton Mine

With these results now in hand Hardline Exploration Ltd. (“Hardline”), a respected independent geological consulting firm, will complete an NI 43-101 Technical Report on the Brussels Creek Project, as previously announced.

Brussels Creek Soil Survey Highlights

• A total of 127 soil samples were collected on a systematic grid over prospective ground within the Brussels Creek claim block. Samples returned between 1 -88 ppb Au and 28 – 221 ppm Cu (Figures 2, 3). 

• The survey returned multiple gold and copper anomalous trends, with values in several samples falling into the 15–30 ppb Au range, a notable number in the 30–75 ppb Au range, and isolated samples exceeding 75 ppb Au. 

• Two prominent anomalous zones have emerged: 

  • A western anomaly of elevated gold-in-soil samples, with the largest sample responses (e.g., 88 ppb and other upper-tier values) defining a coherent trend coincident with interpreted structural breaks and favorable lithologic contacts, which remains open to the west. 

  • An eastern anomaly of 76 ppb Au on the edge of the geochemical survey which has potential to remain open in multiple directions.  

Several gold anomalies remain open along strike and to the north and south, suggesting the potential for expanded anomalous footprints with follow-up sampling and geophysical targeting.

The Fall 2025 soil geochemical results from Brussels Creek confirm the presence of robust gold anomalism across multiple structural corridors within the project area,” said David Greenway, CEO of Vanguard Mining Corp. “What is particularly encouraging is that several of the stronger gold soil trends — including our western and eastern anomalies — remain open and untested. These open-ended trends provide us with clear vectors toward potential mineralized systems and materially enhance our confidence as we move into the next phase of detailed geophysics and drill targeting.”

“Importantly, these results are emerging at a time when gold is trading near record highs, reinforcing the strategic value of advancing high-quality gold targets in tier-one jurisdictions like British Columbia. At the same time, strengthening long-term fundamentals for copper — driven by electrification, grid expansion, AI infrastructure, and global decarbonization initiatives — underscore the significance of Brussels Creek’s copper-gold porphyry setting. The project’s location within the Quesnel Terrane, adjacent to the producing New Afton Mine, positions Vanguard in one of Canada’s most proven copper-gold belts.”  

“We believe Brussels Creek has the geological ingredients necessary for a meaningful discovery, and these soil results represent a critical step in systematically unlocking that potential.”

Gold has recently traded at or near all-time highs, supported by record central bank accumulation, geopolitical instability, and investor demand for hard assets. At the same time, global copper inventories remain historically tight, while projected demand growth tied to electric vehicles, battery storage, artificial intelligence data centers, and power grid expansion continues to outpace new supply development. Major mining companies have increasingly focused on securing long-life copper-gold assets in mining-friendly jurisdictions, highlighting the strategic value of projects within established porphyry belts such as British Columbia’s Quesnel Terrane.

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Figure 2: Soil Geochem Map – Gold

  

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Figure 3: Soil Geochem Map – Copper

Next Steps

Following the soil survey results, Vanguard is initiating:

• Detailed geological mapping and prospecting over the western and eastern anomalies, 

• Follow-up Induced Polarization (IP) and resistivity geophysical surveys to constrain subsurface chargeability and structure, 

• Integration of soil geochemistry with historical rock geochemistry and alteration data to refine drill-ready targets for 2026. 

• Follow Up Drill Program  

About Hardline Exploration Corp.

Hardline Exploration Corp. is a geological consulting and project management company based in Smithers, British Columbia. The company specializes in early- to advanced-stage mineral exploration, offering comprehensive services including geological mapping, geochemical and geophysical program design, data interpretation, and project management. Hardline has a strong track record of executing cost-effective, technically robust field programs across Western Canada.

QA/QC and Data Verification

All samples from Vanguard’s 2025 Brussels Creek exploration program were collected, handled, and transported in accordance with industry-standard protocols designed to ensure data integrity. Samples were placed in secure sample bags, sealed at the collection site, and maintained under a documented chain of custody from the field through transport to the analytical laboratory.

Analytical work is being conducted by SGS, an independent ISO-accredited laboratory meeting the requirements of ISO/IEC 17025:2017 and ISO 9001:2015. Gold analysis methods and multi-element assays were performed using industry-standard analytical techniques appropriate for early-stage geochemical exploration. SGS retains coarse rejects and pulps for potential future verification and re-analysis.

Vanguard maintains a rigorous internal quality assurance and quality control (“QA/QC”) program. The program includes the systematic insertion of certified reference materials (standards), blanks, and field duplicates into the sample stream at regular intervals to monitor analytical accuracy, precision, and potential contamination. Laboratory internal QA/QC results are reviewed by the Company to ensure compliance with accepted industry practices.

The Company’s Qualified Person has reviewed the QA/QC procedures and analytical results and has not identified any material issues that would impact the reliability of the reported data. The data verification procedures employed are considered appropriate for an early-stage exploration program.

Historical information referenced in this news release has been reviewed against available government assessment reports and other public disclosures; however, such information has not been verified to current NI 43-101 standards and is therefore considered historical in nature and provided solely for exploration context.

Figure 4: 2019 sampling and 2023 drill hole locations.

Regional Context & Indigenous Collaboration

On November 3, 2025, Coeur Mining Inc. announced a definitive agreement to acquire New Gold Inc. in a US$7 billion all-stock transaction, creating a combined US$20 billion mining company. This development further elevates the strategic importance of the region and highlights the consolidation of major copper-gold assets in British Columbia.

Brussels Creek is strategically located adjacent to New Gold Inc.’s New Afton Mine (Figure 1), a long-running copper-gold operation situated within the prolific Quesnel Terrane. This proximity to an established, high-value mining complex enhances Vanguard’s exploration potential and underscores the strategic significance of its land position within British Columbia’s Quesnel Terrane, a regional geologic belt renowned for hosting large alkalic porphyry copper-gold systems.

Vanguard acknowledges that the Brussels Creek Project lies within the Stk’emlúpsemc te Secwépemc territory, on the unceded traditional lands of the Secwépemc Nation. The Company is committed to working in close collaboration with Kempuls te Secwépemc (“TteS”) throughout the execution of current and future exploration programs. This collaboration includes a focus on local employment and training opportunities, procurement from Indigenous-owned businesses, environmental stewardship aligned with community priorities, and transparent, ongoing engagement as activities progress.

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Figure 5: Brussels Creek Claim Map.

Vanguard also continues ongoing First Nations consultation and an Archaeological Impact Assessment (“AIA”), required prior to accessing additional priority sites identified in the NI 43-101 technical report prepared for Vanguard (formerly Le Mare Gold Corp.) dated February 19, 2021, and revised April 12, 2021, by Chris M. Healey, P.Geo., Principal Geologist, Healex Consulting Ltd. (EGBC #36477).

About Brussels Creek, Kamloops, BC

The Brussels Creek Property lies approximately 24 km west of Kamloops, and adjacent to New Gold’s New Afton Mine (Figure 1). The project covers 1,350.43 hectares (17 claims, 66 cells) (Figure 5) and is hosted by a geological setting analogous to New Afton, as well as Highland Valley, Mount Polley, Kemess, and Galore Creek—all silica-saturated, copper-gold alkalic porphyry deposits, and all within the Quesnel Terrane.

Fieldwork has identified a mineralized quartz-feldspar porphyry body intruding Nicola Group volcanics. Historical sampling (1983–1984) delineated a 200 m × 400 m anomalous zone with gold values up to 3.5 g/t. Grab samples taken from the property in 2019 include values of 10.1 g/t Au (with 0.7 g/t Pd), and 11.5 g/t Au, confirming high-grade surface mineralization.

Disclosure regarding New Afton: Information on New Gold Inc.’s New Afton Mine is sourced from New Gold’s publicly filed 2024 annual results and provided solely to illustrate Brussels Creek’s proximity to an operating mine. The Qualified Person confirms this does not constitute restricted disclosure under NI 43-101 s. 2.3(1)(a), as it refers to production from a third-party operation, not the Company’s property.

Vanguard’s management cautions that past results or discoveries on properties in proximity to Vanguard may not necessarily be indicative of the presence of mineralization on the Company’s properties.

Brussels Creek Web Page: Brussels Creek – Vanguard Mining Corp

About Vanguard Mining Corp.

Vanguard Mining Corp. is a Canadian mineral exploration company focused on the discovery and development of high-value strategic minerals. The Company is currently advancing exploration projects in Argentina, Canada, and Paraguay, with a focus on identifying and developing assets critical to the global energy transition. Vanguard is committed to responsible exploration and value creation through the acquisition and advancement of highly prospective uranium and precious-metal properties.

All Stakeholders are encouraged to follow the Company on its social media profiles on LinkedIn, X.com, Facebook and Instagram and sign up for updates at Vanguardminingcorp.com

Qualified Person  

The scientific and technical information contained in this news release has been reviewed and approved by Lawrence Segerstrom, P.Geo., M.SC., MBA, a consulting geologist who is a “Qualified Person” as such term is defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Segerstrom is not at arm’s length to Vanguard and is therefore not independent for the purposes of NI 43-101.

The disclosure regarding production results from New Gold Inc.’s New Afton Mine is based on information contained in New Gold’s publicly filed 2024 annual results. This information is provided strictly for contextual purposes to highlight the proximity of the Company’s Brussels Creek Project to an established mining operation. The Qualified Person confirms that this disclosure does not constitute restricted disclosure under Section 2.3(1)(a) of NI 43-101, as it refers to actual reported production from a third-party mine and not to the Company’s property or mineralization.

The references to historical sampling results (1983–84) and grab samples collected in 2019 are exploration results, not “historical estimates” as defined in Section 2.4 of NI 43-101. Accordingly, the historical estimate disclosure requirements of NI 43-101 do not apply. The Company cautions that grab samples are selective by nature and may not be representative of overall mineralization on the property.

Vanguard cautions that past results or production from properties in proximity to Vanguard may not necessarily be indicative of mineralization on the Company’s properties.

On Behalf of the Board of Directors

“David Greenway”

David Greenway, CEO

For further information, please contact:

Vanguard Mining Corp.
Brent Rusin
Phone: +1 672-533-0348
E-Mail: [email protected]
Website: vanguardminingcorp.com

Neither the Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in the policies of the CSE) accepts responsibility for the adequacy or accuracy of this release.

Disclaimer for Forward-Looking Information

Certain statements in this release are forward-looking statements, which reflect the expectations of management regarding Vanguard’s intention to continue to identify potential transactions and make certain corporate changes and applications. Forward looking statements consist of statements that are not purely historical, including any statements regarding beliefs, plans, expectations, or intentions regarding the future. Such statements are subject to risks and uncertainties that may cause actual results, performance, or developments to differ materially from those contained in the statements. No assurance can be given that any of the events anticipated by the forward-looking statements will occur or, if they do occur, what benefits Vanguard will obtain from them. These forward-looking statements reflect managements’ current views and are based on certain expectations, estimates and assumptions which may prove to be incorrect. A number of risks and uncertainties could cause actual results to differ materially from those expressed or implied by the forward-looking statements, including Vanguard’s results of exploration or review of properties that Vanguard does acquire. These forward-looking statements are made as of the date of this news release and Vanguard assumes no obligation to update these forward-looking statements, or to update the reasons why actual results differed from those projected in the forward-looking statements, except in accordance with applicable securities laws.

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