Vanguard Mining Begins Mobilization for 2025 Redonda Copper-Molybdenum Drill Program, British Columbia

(TheNewswire)

Vancouver, BC – TheNewswire - September 26, 2025 – Vanguard MiningCorp. ("Vanguard" or the "Company") (CSE: UUU |OTC: UUUFF | Frankfurt: SL51) announces that it has commenced mobilization for the 2025diamond drill program (the “Drill Program”) atits 100% Owned, 2746.46 Hectare Redonda Copper-MolybdenumProject(the “Project”), located within theVancouver Mining Division of British Columbia near CampbellRiver.

The Drill Program will be guided by targets andstructural corridors interpreted from the previously announcedPrecision GeoSurveys(“Precision”) airborne geophysical program,integrated with results from recent drilling and surface sampling.Recent drilling at Redonda returned intervals up to 142.6 metres (467.8 feet) grading 0.279% Cuand 0.0281% Mo, while surface sampling deliverednear-surface intervals ranging from 3.1 metres (10.17 feet) to 48 metres (157.4feet) grading 0.529% CuEq (See News Release dated
January 25, 2024). 

To execute the program, Vanguard has engaged ParadigmDrilling Ltd. (“ParadigmDrilling”), which will deploy a Boyles B-15hydraulic, track-mounted diamond drill equipped with NQ tooling andcapable of testing targets to greater than 600 metres depth. Initialpads are permitted and being prepared, with step-outs planned toevaluate continuity of porphyry-style copper-molybdenum mineralizationalong prioritized trends.

Vanguard will work in close collaboration with theKlahoose First Nation for labour and logistics support throughout thecampaign and will continue to advance engagement as activitiesprogress.

David Greenway,CEO of Vanguard Mining Corp., commented:

“Mobilization is now underway for our 2025 program at Redonda,marking an important milestone for Vanguard. With permits secured andbudgets in place, we are advancing a deep drilling campaign designedto test the most compelling targets identified through recent surveysand drilling. Previous work delivered highly encouraging results,including a 174-metre mineralized zone beginning at surface and strongsurface sampling averaging approximately 0.5% copper-equivalent—bothof which provide clear vectors for expansion at depth.

British Columbia continues tosupport responsible resource development, and the Government ofCanada’s new Major Projects Office demonstrates a strong commitmentto advancing critical projects efficiently. With these favorableconditions, our objective this season is to build on the 2023–2024discovery and begin outlining the true scale of the Redonda system,added Greenway”

The Project is fully permitted to commence drilling,and the Company is fully funded for the proposed exploration program.The 2025 program is designed to follow up on a near-surfaceCopper/Moly discovery announced in 2023 and 2024.

2025 Program Scope andTargeting

The Company is currently permitted for up to 10 drillsites and is evaluating an aggressive 2025 program that includesdetailed geological mapping of brecciation trends and deeper drillingbelow 500 metres within the known potassic core. Mineralized zonesremain open to the north and south, with potential extensions along anold road system ~1 kilometre to the northwest. To the south,mineralization is interpreted to plunge beneath the Coast PlutonicComplex, where follow-up airborne geophysics and subsequent drillingare warranted. In addition, extensive iron skarns identified on theeast side of Redonda Island may represent part of a largermagmatic-hydrothermal system at depth, reinforcing the Project’sdistrict-scale potential.

Program Highlights

• Mobilization underway for 2025 diamond drilling atRedonda (2,746.46 ha), near Campbell River, BC. 

• Up to 10permitted drill sites; program contemplatesdeeper holes (500 m) into potassic core and detailed mapping ofbrecciation trends. 

• Prior work indicates mineralization open north–south,with a possible NW extension(~1 km) along an old road system. 

• Southern plunge beneath the Coast Plutonic Complex to be assessed with additional geophysics anddrilling. 

• Iron-skarn occurrences on east Redonda Island support a district-scalemagmatic-hydrothermal model. 

• Paradigm Drilling engaged; Boyles B-15 rig withNQtooling to test 600m depth. 

• Ongoing collaboration with the Klahoose First Nationfor labour and logistics. 

The Company will provide updates on drill start,meterage, and subsequent assay results as they becomeavailable.

Click Image To View Full Size

Figure1: 2024 Airborne Magnetics (RTP) with lineaments
– See release

Target Generation from 2024 AirborneGeophysics

Drill hole locations have been selected using acombination of historical datasets and results from the Company’slate-2024 airborne geophysical survey, which integrated total magneticintensity, gradient magnetics, and radiometrics. The survey delineatesstrong correlations with mapped geological domains, including anortheast–southwest–trending fault system exhibiting right-lateraloffset and several circular magnetic lows interpreted as potentialintrusive centres. Radiometric potassium anomalies define arcuatepotassic-alteration zones—key vectors in porphyry copper-molybdenumsystems—focusing priority targets both adjacent to historicaldrilling and along newly defined structural corridors. The fullairborne data package, including GeoTIFF magnetic and radiometricmaps, will be made available on the Company’s website to illustratethe scale and quality of the Redonda exploration opportunity.

QA/QC and Data Verification

Core samples are shipped to an ISO/IEC17025–accredited laboratory. Samples are analyzed usingindustry-standard multi-element packages (e.g., ICP-AES/ICP-MS) withappropriate over-limit assays. Vanguard inserts blanks, certifiedreference materials, and duplicates at regular intervals. TheQualified Person has reviewed the QA/QC program results and verifiesthat the sampling, analytical, and QA/QC protocols are appropriate foran early-stage exploration program. Historical information has beenreviewed against available assessment reports;it cannot be independently verified to modern standards and is usedfor exploration guidance only.

Copper-Equivalent (CuEq) Note

CuEq is calculated as: Cu% + (Mo% × [Mo price/Cuprice] × [Mo recovery/Cu recovery]). For comparative purposes only,CuEq herein assumes US$4.70/lb copper and US$25.00/lb molybdenum(molybdic oxide, ~57% Mo, in-warehouse Rotterdam basis), and 100%metallurgical recoveries for both metals where recoveries are unknown,which may not be representative of actual recoveries. CuEq is anexploration-stage comparative metric and does not imply economicviability.

Nearby Properties

References to mineralization on nearby properties(e.g., OKover, Gambier Copper) are provided for geological contextonly. Mineralization hosted on nearby or adjacent properties is notnecessarily indicative of mineralization on the Redondaproperty.

About Redonda

The Redonda Project comprises nine mineral claimstotaling 2,746.46 ha, located approximately 40 km northeast ofCampbell River, British Columbia. The property is accessibleyear-round via scheduled barge service from Campbell River (e.g.,MarineLink or other contract barges), with on-site access provided by5 km of recently upgraded logging road from Redonda Bay. Activeforestry maintains an extensive network of forest service roads acrossthe claims. Field work in 2021 was conducted under a Letter of Supportfrom the Klahoose First Nation within their Traditional Territory,together with a Free Use Permit, Drill Permit, and IP Exemption issuedby the Ministry of Energy, Mines and Low Carbon Innovation (EMLI).Consultation with the Homalko First Nation has concluded, and a permitfor additional drill sites is being issued.

Redonda lies within the Coast Suture Zone between theWrangellia Terrane and the Coast Plutonic Complex. Early Cretaceousdioritic intrusions of the Coast Plutonic Complex are cut by at leastthree later intrusive phases: (i) a quartz plug; (ii) a wide,hornblende-rich dike locally brecciated over ~600 metres of exposedlength; and (iii) several smaller feldspar dikes near the southwesternmargin of the hornblende body. Copper-molybdenum mineralization ismost concentrated along the hornblende dike, particularly withinbrecciated zones. The geological setting shares severalcharacteristics with nearby porphyry systems, including the OKovercopper-molybdenum deposit located ~34 km to the southeast (north ofPowell River) and the Gambier Copper deposit in Howe Sound.

Qualified Person

The scientific and technical information contained inthis news release has been reviewed and approved by J. T. Shearer, M.Sc., D.I.C., P.Geo. (BC & Ontario),a consulting geologist who is a “QualifiedPerson” as such term is defined under National Instrument43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Shearer is not arms length forVanguard.

About Vanguard Mining Corp.

Vanguard Mining Corp. is a mineral exploration anddevelopment company dedicated to the discovery and advancement ofhigh-value strategic mineral assets. The Company is focused oncreating long-term value through the responsible acquisition anddevelopment of highly prospective projects located in stable,mining-friendly jurisdictions worldwide.

On Behalf of the Board ofDirectors

“David Greenway”

David Greenway, CEO

For further information, pleasecontact:

Vanguard Mining Corp.

Brent Rusin

Phone: +1 672-533-0348

E-Mail: brent@vanguardminingcorp.com

Website: vanguardminingcorp.com

Neither the Canadian Securities Exchange nor itsRegulation Services Provider (as that term is defined in the policiesof the CSE) accepts responsibility for the adequacy or accuracy ofthis release.

Disclaimer for Forward-LookingInformation

Certain statements in this releaseare forward-looking statements, which reflect the expectations ofmanagement regarding Vanguard’s intention to continue to identifypotential transactions and make certain corporate changes andapplications. Forward looking statements consist of statements thatare not purely historical, including any statements regarding beliefs,plans, expectations, or intentions regarding the future. Suchstatements are subject to risks and uncertainties that may causeactual results, performance, or developments to differ materially fromthose contained in the statements. No assurance can be given that anyof the events anticipated by the forward-looking statements will occuror, if they do occur, what benefits Vanguard will obtain from them.These forward-looking statements reflect managements’ current viewsand are based on certain expectations, estimates and assumptions whichmay prove to be incorrect. A number of risks and uncertainties couldcause actual results to differ materially from those expressed orimplied by the forward-looking statements, including Vanguard’sresults of exploration or review of properties that Vanguard doesacquire. These forward-looking statements are made as of the date ofthis news release andVanguard assumes no obligation to update these forward-lookingstatements, or to update the reasons why actual results differed fromthose projected in the forward-looking statements, except inaccordance with applicablesecurities laws.

###

Copyright (c) 2025 TheNewswire - All rights reserved.