Vancouver, BC – TheNewswire - April 14, 2026 – Vanguard Mining Corp. ("Vanguard" or the "Company") (CSE: UUU | OTCID: UUUFF | FWB: SL51) announces that exploration activities have commenced at the Nucleon Uranium Project (“Nucleon Project”) located in Saskatchewan’s Athabasca Basin, a well-established uranium-producing region. The project consists of four exploration areas situated within regional geological trends associated with uranium mineralization in the Basin.

As previously disclosed in the Company’s news release dated January 13, 2026, Vanguard has engaged Hardline Exploration Ltd. (“Hardline”), a Canadian geological consulting and project management firm, to manage and execute the initial exploration program across the Company’s seven mineral claims.

The Nucleon Project is in the Athabasca Basin and is organized into four exploration areas totaling 23,424.90 hectares (approximately 57,880 acres), a region known for hosting high-grade uranium deposits and playing an important role in Canada’s nuclear energy sector (Figure 1).

David Greenway, CEO of Vanguard Mining Corp., commented, “The Nucleon Project provides the Company with a district-scale land position in Saskatchewan’s Athabasca Basin, a top-tier uranium-producing jurisdiction. The project is located within a regional geological setting that hosts several significant uranium deposits, including Fission Uranium’s Patterson Lake South deposit and NexGen Energy’s Arrow deposit. The Company’s land package totals more than 23,000 hectares, and the Company has not identified records of recent systematic modern exploration on the claims.

Exploration activities are now underway through a geochemical screening program conducted by Hardline Exploration, which is designed to evaluate the property and identify areas for follow-up work in a systematic and technically informed manner.”

Location and Exploration Approach

The Company’s four target areas are located within regional geological trends in the Athabasca Basin that host uranium exploration and development activity. Hardline Exploration will incorporate regional geological interpretations and publicly available data from nearby projects in the analysis of geochemical results from the Nucleon Project. This approach is intended to support the identification and prioritization of areas for follow-up exploration based on geological and geochemical characteristics associated with uranium mineralization.

Phase 1 Exploration Program – Spring 2026

Vanguard has engaged Hardline Exploration to carry out a structured exploration program across the Nucleon Uranium Project. The Phase 1 program will focus on evaluating the Company’s land package through a lake sediment geochemical survey designed to assess the distribution of uranium and associated pathfinder elements across the seven mineral claims.

Sampling will be conducted under winter conditions, allowing access to frozen lake surfaces and facilitating systematic and efficient sediment collection. Lake sediments are commonly used in the Athabasca Basin, as they can capture geochemical dispersion from underlying bedrock through groundwater movement and glacial transport processes.

The program is expected to be completed in Q2 and will include:

• Systematic lake sediment sampling across all claim blocks  

• Multi-element geochemical analysis targeting uranium and associated pathfinder elements (e.g., U, Th, Pb, Ni, Co, REEs)  

• Interpretation and mapping of geochemical anomalies  

• Prioritization of areas for follow-up exploration  

Results from the Phase 1 program will be used to evaluate and rank exploration areas and to support the planning of subsequent exploration activities, which may include ground geophysics, radiometric surveys, geochemical sampling, permitting, and consultation with relevant stakeholders prior to potential drill testing.

The Company cautions that the presence of uranium mineralization, deposits, or discoveries on nearby properties, including those operated by third parties, is not necessarily indicative of mineralization on the Nucleon Project.

 

Figure 1: Nucleon four priority uranium prospects In Athabasca Basin

Western Athabasca Geological Setting

The western portion of the Nucleon Uranium Project is situated within a regional structural corridor of the Athabasca Basin that hosts several known uranium deposits, including Fission Uranium’s Patterson Lake South (PLS) deposit and NexGen Energy’s Arrow deposit. These deposits are spatially associated with basement-hosted and unconformity-related uranium systems controlled by major fault zones, graphitic conductors, and reactivated basement structures.

The Company’s western Nucleon claims are located within this broader geological setting and will be evaluated based on their proximity to interpreted structural features, conductive trends, and geochemical indicators considered relevant in the exploration for Athabasca Basin uranium deposits.

About the Nucleon Uranium Project

The Nucleon Uranium Project consists of seven exploration-stage mineral claims totaling 23,424.90 hectares (approximately 57,880 acres) in northern Saskatchewan, Canada, within the Athabasca Basin, a well-established uranium-producing region.

The project is divided into four exploration areas, each situated within or adjacent to regional geological trends associated with uranium mineralization.

North-Western Claims

Located immediately north of properties held by Fission Uranium Corp. and approximately 5 km north of properties held by Orano Canada.

North-Central Claims

Located in proximity to properties held by Rio Tinto Canada and Apollo Metals.

Central Claims

Contiguous with properties held by Atha Energy Corp. and CanAlaska Uranium Ltd., and adjacent to claims held by Allied Corp.

Eastern-Central Claims

Surrounded by properties held by Atha Energy Corp. and located north of claims held by Cameco Corporation..

Together, these four areas provide the Company with a district-scale land position within an active uranium exploration region.

As of the date of this news release, the Company has not identified records of significant recent systematic modern exploration on the Nucleon mineral claims. Exploration activities are at an early stage, and there is no assurance that economically viable mineralization will be identified. The Company cautions that the presence of uranium mineralization, deposits, or discoveries on nearby or adjacent properties, including those referenced above, is not necessarily indicative of the presence, extent, or grade of mineralization on the Nucleon Project.

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.

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 retained directly by Vanguard Mining Corp. and a "Qualified Person" as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101"). Mr. Segerstrom is not independent of the Company within the meaning of NI 43-101.

About Vanguard Mining Corp.

Vanguard Mining Corp. (CSE: UUU | OTC Pink: UUUFF | FWB: SL51) is a Canadian mineral exploration company focused on the discovery and development of high-value critical minerals, with a primary focus on uranium. The Company maintains a diversified portfolio of exploration-stage properties across Canada, Paraguay, and Argentina, including the Nucleon Uranium Project in Saskatchewan's Athabasca Basin, the Yuty Prometeo Uranium Project in Paraguay, the Redonda Copper-Molybdenum Property in British Columbia, and additional properties in Ontario and Saskatchewan. Vanguard is committed to responsible exploration and value creation through the systematic advancement of strategically acquired mineral assets.

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

On Behalf of the Board of Directors

“David Greenway”

David Greenway, Director & CEO

For further information, please contact:

Vanguard Mining Corp.
Brent Rusin
Phone: +1 672-533-0348
E-Mail: brent@vanguardminingcorp.com
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

This news release contains certain forward-looking statements and forward-looking information (collectively, “Forward-Looking Statements”) within the meaning of applicable Canadian and U.S. securities laws. All statements, other than statements of historical fact, including statements regarding the Company’s exploration plans and activities at the Nucleon Uranium Project, are forward-looking statements.

Forward-Looking Statements are often identified by words such as “anticipate”, “believe”, “estimate”, “expect”, “plan”, “intend”, “may”, “will”, and similar expressions. Forward-Looking Statements in this news release include, but are not limited to, statements relating to: the timing, scope, and objectives of the Company’s exploration program; the completion of the Phase 1 program; the interpretation of geochemical results; and the potential for follow-up exploration activities.

Forward-Looking Statements are based on the current expectations, assumptions, and estimates of management, and are subject to a number of known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements. These risks include but are not limited to: the inherent risks associated with mineral exploration; the possibility that exploration results will not meet expectations; operational and logistical risks; weather conditions; permitting and regulatory approvals; availability of financing; and general economic, market, and industry conditions.

Although the Company believes that the assumptions underlying the Forward-Looking Statements are reasonable, undue reliance should not be placed on such statements, which speak only as of the date of this news release. The Company does not undertake any obligation to update or revise any Forward-Looking Statements, except as required by applicable laws.

Readers are cautioned that the foregoing list of risks and uncertainties is not exhaustive. Additional information about these and other risks and uncertainties is available in the Company's public disclosure documents filed on SEDAR+ (www.sedarplus.ca).

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