Green Bridge Metals Corporation Announces Filing of a NI 43-101 Technical Report and Mineral Resource Estimate for the Flagship Serpentine Project
Green Bridge Metals (OTCQB:GBMCF) has filed a NI 43-101 Technical Report and Mineral Resource Estimate for its Serpentine Copper-Nickel Project in Minnesota. The report reveals significant mineral resources, including 21.6 million tonnes of Indicated Resources at 0.46% Cu, 0.16% Ni, and 0.014% Co, plus 279.9 million tonnes of Inferred Resources at 0.37% Cu, 0.12% Ni, and 0.007% Co.
The project features a high-grade core Massive Sulphide domain containing 1.8 million Indicated tonnes grading 1.16% Cu and 0.52% Ni. The deposit's geometry is favorable for open-pit development with potential low strip ratios. The company plans follow-up exploration in late 2025/early 2026, including infill drilling and metallurgical testing, advancing toward a Preliminary Economic Assessment.
Green Bridge Metals (OTCQB:GBMCF) ha depositato un rapporto tecnico NI 43-101 e una stima delle risorse minerarie per il suo Progetto Serpentine Copper-Nickel in Minnesota. Il rapporto evidenzia risorse minerarie significative, inclusi 21,6 milioni di tonnellate di risorse Indicate con 0,46% Cu, 0,16% Ni e 0,014% Co, oltre a 279,9 milioni di tonnellate di risorse Inferite con 0,37% Cu, 0,12% Ni e 0,007% Co.
Il progetto presenta un nucleo ad alto tenore nella zona di Solfuri Massivi contenente 1,8 milioni di tonnellate Indicate con tenori di 1,16% Cu e 0,52% Ni. La geometria del deposito 猫 favorevole a uno sviluppo a cielo aperto con potenziali bassi rapporti di scarto. La societ脿 prevede esplorazioni di follow-up tra fine 2025 e inizio 2026, comprensive di perforazioni di infill e prove metallurgiche, avvicinandosi a una Valutazione Economica Preliminare.
Green Bridge Metals (OTCQB:GBMCF) ha presentado un informe t茅cnico NI 43-101 y una estimaci贸n de recursos minerales para su Proyecto Serpentine Copper-Nickel en Minnesota. El informe revela recursos minerales significativos, incluyendo 21,6 millones de toneladas de recursos Indicados con 0,46% Cu, 0,16% Ni y 0,014% Co, adem谩s de 279,9 millones de toneladas de recursos Inferidos con 0,37% Cu, 0,12% Ni y 0,007% Co.
El proyecto cuenta con un n煤cleo de alto tenor en el dominio de Sulfuros Masivos que contiene 1,8 millones de toneladas Indicadas con ley de 1,16% Cu y 0,52% Ni. La geometr铆a del dep贸sito es favorable para el desarrollo a cielo abierto con posibles bajos ratios de desmonte. La compa帽铆a planea trabajos de seguimiento a fines de 2025/principios de 2026, incluyendo perforaciones de relleno y ensayos metal煤rgicos, avanzando hacia una Evaluaci贸n Econ贸mica Preliminar.
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頂勲鞝濏姼鞐愲姅 瓿犿拡鞙� 頃奠嫭鞚� 毵れ嫓敫� 靹ろ寣鞚措摐(Massive Sulphide) 鞓侅棴鞚� 韽暔霅橃柎 鞛堨溂氅�, 鞐赴鞐愲姅 Cu 1.16%, Ni 0.52%鞚� 頀堨渼毳� 臧�歆� 甑皠鞛愳洂 180毵� 韱�鞚� 韽暔霅╇媹雼�. 甏戩泊 順曥儊鞚� 雲胳矞臧滊皽鞐� 鞙犽Μ頃� 雮潃 氚曤Μ牍�(strip ratio)臧� 旮半寑霅╇媹雼�. 須岇偓電� 2025雲� 毵悀2026雲� 齑堨棎 鞚疙晞 鞁滌稊鞕� 甏戨瓿淀暀 鞁滍棙鞚� 韽暔頃� 頉勳啀 韮愳偓 鞛戩梾鞚� 瓿勴殟頃橁碃 鞛堨溂氅�, 鞓堧箘 瓴届牅靹� 韽夑皜(PEA)搿滌潣 歆勳爠鞚� 氇╉憸搿� 頃橁碃 鞛堨姷雼堧嫟.
Green Bridge Metals (OTCQB:GBMCF) a d茅pos茅 un rapport technique NI 43-101 et une estimation des ressources min茅rales pour son projet Serpentine Copper-Nickel dans le Minnesota. Le rapport r茅v猫le des ressources min茅rales importantes, dont 21,6 millions de tonnes de ressources indiqu茅es 脿 0,46% Cu, 0,16% Ni et 0,014% Co, ainsi que 279,9 millions de tonnes de ressources inf茅r茅es 脿 0,37% Cu, 0,12% Ni et 0,007% Co.
Le projet comprend un noyau 脿 haute teneur dans le domaine des sulfures massifs contenant 1,8 million de tonnes indiqu茅es avec 1,16% Cu et 0,52% Ni. La g茅om茅trie du gisement est favorable 脿 une exploitation 脿 ciel ouvert avec des ratios de st茅riles potentiellement faibles. La soci茅t茅 pr茅voit des travaux d'exploration de suivi fin 2025/d茅but 2026, incluant des forages d'infill et des essais m茅tallurgiques, en vue d'une 茅tude 茅conomique pr茅liminaire.
Green Bridge Metals (OTCQB:GBMCF) hat einen NI 43-101 Technischen Bericht und eine Sch盲tzung der Mineralressourcen f眉r sein Serpentine Copper-Nickel Projekt in Minnesota eingereicht. Der Bericht zeigt bedeutende Mineralressourcen, darunter 21,6 Millionen Tonnen angezeigte Ressourcen (Indicated) mit 0,46% Cu, 0,16% Ni und 0,014% Co sowie 279,9 Millionen Tonnen abgeleitete Ressourcen (Inferred) mit 0,37% Cu, 0,12% Ni und 0,007% Co.
Das Projekt weist einen hochgradigen Kern in der Massivsulfid-Dom盲ne auf, der 1,8 Millionen angezeigte Tonnen mit 1,16% Cu und 0,52% Ni enth盲lt. Die Lagerst盲tten-Geometrie eignet sich vorteilhaft f眉r einen Tagebau mit potenziell niedrigen Abraumverh盲ltnissen. Das Unternehmen plant Folgebohrungen und metallurgische Tests Ende 2025/Anfang 2026, um in Richtung einer vorl盲ufigen wirtschaftlichen Bewertung (Preliminary Economic Assessment) voranzuschreiten.
- None.
- Majority of resources are in lower-confidence Inferred category
- Project requires additional drilling and metallurgical testing
- Economic viability not yet demonstrated as resources are not reserves
- Environmental and permitting processes still pending
VANCOUVER, BC / / September 4, 2025 / Green Bridge Metals Corporation (CSE:GRBM)(OTCQB:GBMCF)(FWB:J48) (WKN: A3EW4S) ("Green Bridge" or the "Company") is pleased to announce that it has filed on SEDAR+ an independently prepared National Instrument 43-101 Mineral Resource Estimate and Technical Report on its Serpentine Copper-Nickel Project (the "Property") titled "Technical Report and Mineral Resource Estimate for the Serpentine Project, St. Louis County, Minnesota, USA" with an effective date of July 14, 2025 (the "Report").
Highlights of this Report include:
Pit-constrained Mineral Resource Estimate using a US
$10.25 /tonne NSR cut-off.Indicated Mineral Resources: 21.6 million tonnes at average grades of
0.46% Cu,0.16% Ni, and0.014% Co (0.69% CuEq).Inferred Mineral Resources: 279.9 million tonnes at average grades of
0.37% Cu,0.12% Ni, and0.007% Co (0.53% CuEq).A core Massive Sulphide domain containing 1.8 million Indicated tonnes grading
1.16% Cu and0.52% Ni (2.0% CuEq).Well-established regional infrastructure, including highways, rail access via Cleveland-Cliffs' Northshore line to Lake Superior ports, grid power, skilled mining workforce, and equipment suppliers.
Validation of historical drill results and assay data, combined with independent site inspections in 2020 and 2025, confirmed the presence of Cu-Ni-Co sulphide mineralization.
The Serpentine deposit geometry is considered highly favourable for open-pit development with potential for low strip ratios.
Notes related to the Mineral Resource Estimate:
Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration.
David Suda, President and CEO, commented:
"This Technical Report and Mineral Resource Estimate outlines and underscores the strategic importance of the Serpentine Copper-Nickel Project. Serpentine stands out as one of the more significant undeveloped copper-nickel projects in the U.S. Its scale, location, and alignment with national priorities-including recent FAST-41 initiatives to streamline permitting for critical mineral projects-position it as a cornerstone asset for Green Bridge. We see clear momentum building for mining in the United States, and this project puts us at the center of that opportunity."
The Company is planning a follow-up exploration program in late 2025/early 2026 to build on the new resource estimate. This will include infill drilling to upgrade Inferred Mineral Resources to Indicated Mineral Resources, step-out drilling to test extensions of the high-grade massive sulphide domain, and additional metallurgical testwork. Baseline environmental and geotechnical studies are also planned to support advancement of the Property toward a Preliminary Economic Assessment and ultimately a Pre-Feasibility Study.
Market Context
The Property aligns with growing demand for secure North American sources of copper, nickel, and cobalt-all designated as strategic by the U.S. government. These metals are critical for the clean energy transition, including electric vehicles, grid storage, and renewable power infrastructure. With scale and location in Minnesota's established mining district, the Property is positioned to play a key role in the domestic supply chain.
Infrastructure Advantage
The Property benefits from excellent regional infrastructure. Northeastern Minnesota provides paved highways, rail connections, grid power, international shipping ports, and a skilled workforce. A private rail line serving Cleveland-Cliffs' Northshore Mining Operations connects to Lake Superior ports, offering global shipping via the Great Lakes and St. Lawrence Seaway. The established taconite mining industry nearby ensures access to suppliers, contractors, and experienced personnel. These factors lower development risk and support year-round operations.
For a discussion of the Company's data verification and QA/QC procedures, please see the Report, a copy of which is available under the Company's profile on SEDAR+.
Qualified Persons
The Mineral Resource Estimate and Technical Report were prepared by Michael B. Dufresne, M.Sc., P. Geol., P.Geo., and Kristopher J. Raffle, B.Sc., P.Geo. of APEX Geoscience Ltd., and Eugene Puritch, P. Eng., FEC, CET, and Fred H. Brown, P.Geo. of P&E Mining Consultants Inc., all independent Qualified Persons under NI 43-101.
About Green Bridge Metals
Green Bridge Metals Corporation is a Canadian-based exploration company focused on acquiring critical mineral assets and developing projects along the basal contact of the Duluth Intrusion, north of Duluth, Minnesota. The Company's portfolio includes properties prospective for bulk-tonnage copper-nickel sulphides, high-grade Ni-Cu-PGE magmatic sulphides, and titanium-vanadium in ilmenite.
ON BEHALF OF GREEN BRIDGE METALS,
"David Suda"
President and Chief Executive Officer
For more information, please contact:
David Suda
President and Chief Executive Officer
Tel: 604.928-3101
[email protected]
Forward Looking Information
Certain statements and information herein, including all statements that are not historical facts, contain forward-looking statements and forward-looking information within the meaning of applicable securities laws. Such forward-looking statements or information include but are not limited to statements or information with respect to: the exploration and development of the Property; and plans and progress for the Property.
Although management of the Company believe that the assumptions made and the expectations represented by such statements or information are reasonable, there can be no assurance that forward-looking statements or information herein will prove to be accurate. Forward-looking statements and information by their nature are based on assumptions and involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. These risk factors include, but are not limited to: the exploration and development of the Property may not result in any commercially successful outcome for the Company; risks associated with the business of the Company; business and economic conditions in the mining industry generally; changes in general economic conditions or conditions in the financial markets; changes in laws (including regulations respecting mining concessions); and other risk factors as detailed from time to time.
The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws.
The Canadian Securities Exchange has neither approved nor disapproved the information contained herein and does not accept responsibility for the adequacy or accuracy of this news release.
SOURCE: Green Bridge Metals Corporation
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