Business Context and Reporting Period
Company: Guardian Metal Resources PLC (NYSE.A: GMTL, LON: GMET, OTCQB: GMTLF)
Filing Type: Form 6-K (Report of Foreign Private Issuer)
Date: September 14, 2026
Subject: Announcement of positive tungsten drilling results from the Pilot Mountain project in Nevada, USA, specifically the newly discovered Tremor Zone and the previously untested Good Hope Zone.
Key Financial and Operational Metrics
Note: This filing is a technical update regarding exploration results and does not contain audited financial statements, revenue, profit, cash flow, or debt figures.
- Project Status: Pre-Feasibility Study (PFS) recently completed; Definitive Feasibility Study (DFS), engineering, and permitting are advancing.
- Drilling Activity:
- Tremor Zone: 8,140 meters across 37 holes completed to date (majority assays pending).
- Good Hope Zone: 1,682 meters across 13 holes completed.
- Key Drill Intersections (Tremor Zone North):
- PM26-088: 64.15m @ 0.20% WO3 (including 14.27m @ 0.34% WO3).
- PMR26-078: 15.20m @ 0.28% WO3.
- PM26-097: Multiple zones including 44.08m @ 0.18% WO3.
- Key Drill Intersections (Good Hope Zone):
- GH26-01: 12.95m @ 0.79% WO3.
- GH26-02: 13.11m @ 0.42% WO3 (combined apparent thickness with GH26-01 is 23m @ 0.58% WO3).
- Government Support: Received US$6.2M investment from the U.S. Department of Defense (July 2025) to support the PFS.
Material Changes and Operational Updates
- Tremor Zone Discovery: A blind tungsten-skarn discovery made in June 2026. Mineralization confirmed over ~200m strike and ~190m dip in the northern zone, remaining open in multiple directions.
- Infrastructure Revision: The discovery prompted a relocation of the planned Tailings Storage Facility (TSF). Management states this requires a revised design but is not expected to materially affect project costs or timelines.
- Good Hope Zone: First-ever drilling at this at-surface target returned high-grade near-surface mineralization located 1.1 to 1.3km from existing resource areas.
- Resource Status: No Mineral Resource Estimate has been prepared for the Tremor or Good Hope Zones. These areas were not included in the recently completed PFS.
Guidance, Outlook, and Risks
Management Commentary: CEO Oliver Friesen stated that results reinforce the potential to expand tungsten mineralization beyond the PFS resources. The company aims to make Pilot Mountain the first new tungsten mine on U.S. soil in over a decade.
Outlook:
- Continued drilling to test exploration upside and define resources for the Tremor and Good Hope zones.
- Parallel advancement of DFS, engineering, and permitting.
- Flexibility retained in infrastructure planning to potentially incorporate the Tremor Zone into future mine plans.
Risks and Contingencies:
- Exploration Risk: Further drilling and evaluation are required to determine the significance of new zones to the broader project.
- Regulatory Risk: Subject to timing and granting of regulatory consents and approvals.
- Forward-Looking Statements: Subject to uncertainties regarding technical issues, market conditions, and the ability to execute future plans.
Investor Verification Checklist
- Verify the timeline and cost impact of the revised Tailings Storage Facility (TSF) design.
- Monitor the release of pending assay results for the majority of the 37 holes drilled at the Tremor Zone.
- Confirm the schedule for the Definitive Feasibility Study (DFS) and permitting milestones.
- Review the technical report for the Pre-Feasibility Study (PFS) to understand the baseline resource against which these new discoveries are being compared.
- Assess the status of the US$6.2M Department of Defense funding utilization.