Welcome to our dedicated page for Guardian Metal news (Ticker: gmtlf), a resource for investors and traders seeking the latest updates and insights on Guardian Metal stock.
Guardian Metal Resources plc (GMTLF) provides essential updates on its Nevada-based tungsten exploration and critical minerals development through this dedicated news hub. Investors and industry observers will find authoritative reporting on drilling results, resource estimates, and strategic initiatives that shape the company's position in domestic metals production.
This resource consolidates official announcements including project milestones from Pilot Mountain and Tempiute, geotechnical findings, and operational updates. Users gain timely access to filings detailing exploration progress, infrastructure developments like water rights acquisitions, and analyses of mineral resource potential.
Key content focuses on tungsten deposit evaluations, copper-silver-zinc discoveries, and lithium exploration updates across Guardian Metal's portfolio. The collection serves as a strategic research tool for tracking technical advancements and corporate developments in North America's critical minerals sector.
Bookmark this page for direct access to Guardian Metal's latest verified updates, presented with clarity for both professional analysts and engaged stakeholders. Regular visits ensure informed tracking of the company's progress in establishing domestic sources of defense-critical metals.
Guardian Metal Resources (OTCQB:GMTLF) submitted an S-K 1300 Technical Report Summary dated 15 Dec 2025 and reported a maiden pit-constrained Mineral Resource at Pilot Mountain Desert Scheelite with an Indicated 8,694,000 t at 0.206% WO3 and Inferred 1,784,000 t at 0.169% WO3. The pit-constrained Indicated tonnage is stated as ~16% higher than the 2018 scoping-study pit-constrained Indicated estimate.
The MRE uses a 0.06% WO3 cut-off, assumes $65,500/t WO3 and 80% recovery, and will support a Pre-Feasibility Study (PFS) funded in part by a $6.2M DoD DPA Title III award; the PFS is targeted for completion by end of H1 2026 with a goal of initial production before end of 2028.
Guardian Metal Resources (OTCQX:GMTLF) announced final inversion results from a 2025 3D induced-polarisation (3DIP) survey at the Pilot Mountain Project, Nevada, expanding coverage >1 km south across the Porphyry South zone.
The integrated 2022–2025 data show a ~1 km2 chargeable anomaly (>25 ms at 200 m depth) forming a chargeability–resistivity “donut” halo around a magnetic high. The inner margin of the chargeable halo aligns with highest surface copper results and follows a 2024 drill hole (PM24‑002a) that intercepted 385.1 m of porphyry-style mineralisation with molybdenum up to 1,170 ppm. Company to prioritise drilling inner pyrite shell targets into 2026.
Guardian Metal Resources (OTCQX:GMTLF / LON:GMET) received notice to exercise options over 100,000 new ordinary shares at an exercise price of 0.14p per share, raising £14,000.
Application will be made for the 100,000 Warrant Shares to be admitted to trading on AIM, expected on or around 20 November 2025. After Admission, issued share capital will be 167,998,967 ordinary shares, which represents the total voting rights denominator for FCA Disclosure and Transparency Rules purposes.
Guardian Metal Resources (OTCQX:GMTLF / AIM:GMET) announced the formal appointment of Michael Xavier Schlumpberger as an Independent Non-executive Director effective 11 November 2025.
Mr Schlumpberger joins the Audit Committee and the Remuneration Committee and replaces retiring director Mick Billing. The announcement follows the company’s 3 November 2025 board-change notice and completion of due diligence. Disclosed regulatory details include Mr Schlumpberger’s age (62) and a list of current and recent directorships.
Contact details for the company, nominated adviser, lead broker and PR are provided for investor enquiries.
Guardian Metal Resources (OTCQB:GMTLF / LON:GMET) provided an exploration update for its Garfield gold‑silver‑copper project in the Walker Lane, Nevada on 3 November 2025. Recent work includes rock chip sampling across the Power Line zone (highlight samples: 18.3 g/t Au, 43.6 g/t Ag; 14% Cu, 145 g/t Ag), staking of 42 new BLM lode claims over a newly defined Freeze North zone, and a two‑dimensional IP survey that identified a chargeable feature extending ≈500 m beneath historic high‑grade mines in the Freeze/Freeze East zones. The company holds 100% interest via its Nevada subsidiary (subject to a 2% NSR, 1% buyback for US$1,000,000). Identified targets are under alluvial/post‑mineral cover and require further geophysics and drilling.
Guardian Metal Resources (OTCQB:GMTLF / LON:GMET) announced on November 3, 2025 that Michael X. Schlumpberger, PE MBA will be appointed as a Non-Executive Director, subject to completion of the required AIM due diligence process.
Michael brings almost 40 years of mining experience, including 20 years at PotashCorp and a tenure as CEO of American Pacific Borates where he helped grow market cap from AUS$20M to AUS$900M. He replaces Mick Billing, who will retire after a four-year tenure. The board says Michael's operational and ESG experience will support advancement of the Pilot Mountain and Tempiute tungsten projects. A further announcement with regulatory disclosures will follow.
Guardian Metal Resources (OTCQB:GMTLF) published audited results for year ended 30 June 2025. The Group reported a loss of $2,711,000 (2024: $1,376,000), cash used in operations of $1,122,000, and investment in mining assets of $8,038,000. Year-end cash was $1,873,000 and, at announcement date, cash was $14,720,000 after a $21,000,000 fundraise on 23 July 2025.
Operationally, Pilot Mountain remained the primary development focus and Tempiute was added via a definitive agreement on 27 January 2025. The Group also reported a $6.2 million award to its US subsidiary from the U.S. Department of War to accelerate Pilot Mountain development.
Guardian Metal Resources (OTCQB:GMTLF / LON:GMET) announced on October 23, 2025 the appointment of Tamesis Partners LLP as its broker with immediate effect. The Board said the appointment aims to accelerate the company's access to institutional investors and broaden capital market relationships across the UK, Europe and the U.S. Contact details for the company, nominated adviser Cairn Financial Advisers, lead broker Tamesis Partners, and PR adviser Tavistock are provided for investor enquiries.
Guardian Metal Resources (OTCQB:GMTLF) provided an operational update for its Tempiute tungsten project (October 23, 2025). The company has completed 15 diamond drillholes totaling >2,185m since early September and reports that every hole intersected scheelite-bearing skarn. On-site core logging, cutting and sampling facilities are established to accelerate assays, while mill-site refurbishments continue.
Exploration work includes a 7.35 line-km IP survey showing resistivity correlations with skarn, a 435 line-km drone magnetic survey under inversion, a 100+ sample gallium study with University of Bristol, and beneficiation/metallurgical studies of stockpiles and tailings. Baseline environmental studies are planned for early 2026.
Guardian Metal Resources (OTCQB:GMTLF) has announced exceptional assay results from its 100%-owned Pilot North tungsten-copper project in Nevada. The company collected 92 rock chip samples from the recently staked 102 BLM Lode Claims, revealing significant mineral concentrations including copper grades up to 14.65%, silver up to 708 g/t, and tungsten trioxide up to 0.59%.
The Project, located 15km northwest of the company's Pilot Mountain project, encompasses five historical World War II-era mines: Copper Head, Western Metals, Muller Mountain, Jasper, and Tungsten Valley. The geology mirrors that of Pilot Mountain, with tungsten-copper bearing skarns at granitic intrusion contacts.
This strategic acquisition aligns with Guardian Metal's mission to establish itself as a cornerstone of U.S. tungsten supply, supporting national efforts to reduce foreign supply chain dependence for this critical defense mineral.
[ "Exceptional high-grade assay results with copper up to 14.65%, silver up to 708 g/t, and tungsten trioxide up to 0.59%", "100% ownership with no royalties on the Pilot North project", "Strategic location 15km from existing Pilot Mountain project with shared access road", "Project supports U.S. government's strategic priority for domestic tungsten production", "Multiple historical mines within the property indicating proven mineralization" ]FAQ
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