Green Bridge Metals Advances Plans for H2 2026 Phase 1 Drill Program for Serpentine, Adjacent to NewRange's NorthMet and SunriseProjects, Minnesota, USA

Executive Summary

• Green Bridge Metals announced the advancement of long‑lead technical and operational work for a Phase 1 diamond drilling program at its flagship Serpentine Copper‑Nickel Project in Minnesota, slated for the second half of 2026.
• The program will consist of 6–10 core holes (≈2,000–2,500 m total) to test the existing inferred and indicated mineral resource estimate, evaluate copper‑equivalent grades (including potential PGM and Co contributions), and generate data needed for a Preliminary Economic Assessment within ~18 months.
• Permitting work is underway with the Minnesota Department of Natural Resources; logistics are being prepared with one drilling rig from Foraco, and dual‑purpose holes may also serve hydrogeological monitoring functions.

Key Details

• Project Overview – Serpentine hosts an inferred resource of 279.9 Mt @ 0.37% Cu, 0.12% Ni, 0.007% Co (0.53% CuEq) and an indicated resource of 21.6 Mt @ 0.46% Cu, 0.16% Ni (0.69% CuEq).
• Phase 1 Objectives –
• Validate viability of the current MRE (both inferred and indicated portions).
• Test overall copper‑equivalent grade by assaying for PGMs and cobalt.
• Position the company to complete a PEA within the next 18 months.
• Drilling Plan – Approximately 6–10 diamond core holes, total depth ~2,000–2,500 m; individual hole depths generally 90 m to >305 m, consistent with historic drilling.
• Permitting Status – Ongoing discussions with the Minnesota Department of Natural Resources for six new drill sites.
• Execution Readiness – Logistics and planning are advanced; one Foraco rig (currently at the Titac Project) will be allocated to Phase 1.
• Technical Activities – Down‑hole geophysical surveys will accompany drilling to improve structural interpretation and reduce targeting uncertainty.
• Dual‑Purpose Drilling – Selected holes may double as hydrogeological monitoring wells, providing baseline data for future permitting and engineering studies.
• Sampling & Assaying – Full multi‑element assay program planned; aims to enhance CuEq calculations by incorporating PGMs and Co not currently reflected in the resource model.
• Strategic Rationale – Serpentine’s large, shallow, low‑strip geometry adjacent to NewRange’s NorthMet and Sunrise deposits is presented as a compelling copper‑nickel development opportunity amid high metal prices.

Notable Quotes

“Advancing this drilling program positions Green Bridge to de‑risk the Serpentine resource and move toward a robust PEA, leveraging our strategic location in the Duluth Complex.” – David Suda, President & CEO

Materiality Assessment: Non‑Material – Positive (the announcement provides material operational insight but does not yet impact financial results).