Arizona Metals Announces Filing of the NI 43-101 Technical Report for the Kay Mine Project Preliminary Economic Assessment

Executive Summary

• Arizona Metals Corp. announced the filing of an independent NI 43-101 technical report covering the Preliminary Economic Assessment (PEA) for its 100% owned Kay Mine Project in Arizona.
• The technical report, prepared by G Mining Services and multiple independent engineering/geological firms, confirms no material differences from the PEA previously disclosed on April 30, 2026.
• The release details the underlying 2025 Mineral Resource Estimate, project geology, and comprehensive QA/QC protocols, providing the technical foundation for the company's economic evaluation and future development planning.

Key Details

• Filing & Effective Dates: Technical report dated June 12, 2026, with an effective date of April 30, 2026.
• Report Title: "Preliminary Economic Assessment - NI 43-101 Technical Report, Kay Mine Project, Arizona, USA"
• Preparation Team: Authored by G Mining Services Inc., with contributions from SGS Canada Inc. (Geological Services), WestLand Engineering & Environmental Services, and HALEY & ALDRICH, Inc.
• Materiality Statement: No material differences exist in the Technical Report compared to the PEA disclosed in the April 30, 2026 news release.
• Qualified Persons & Responsibilities:
• Allan Armitage & Ben Eggers (SGS Canada): 2025 Mineral Resource Estimate
• Hind Zniber El Mouhabbis (G Mining): Economic analysis & 2026 PEA
• Carl Michaud (G Mining): Underground mining & 2026 PEA
• Sunil Koppalkar (G Mining): Process & 2026 PEA
• Nicolas Vanier-Larrivée (G Mining): Infrastructure & 2026 PEA
• Richard DeLong (WestLand): Environment & 2026 PEA
• Eric J. Mears (HALEY & ALDRICH): Closure & 2026 PEA
• 2025 Mineral Resource Estimate (Effective June 17, 2025):
• Indicated: 9.28 million tonnes @ 1.39 g/t Au, 27.6 g/t Ag, 0.97% Cu, 0.33% Pb, 2.39% Zn (3.18% CuEq)
• Inferred: 0.86 million tonnes @ 1.06 g/t Au, 15.4 g/t Ag, 0.87% Cu, 0.20% Pb, 1.68% Zn (2.44% CuEq)
• Base-case cut-off grade: 1.00% CuEq
• Project Geology & Status: Steeply dipping VMS deposit defined from 60m to at least 900m depth; remains open for expansion on strike and at depth.
• QA/QC Protocol: Blind standard reference materials and blanks inserted at regular intervals. Drill core diamond-sawn on-site and transported to ALS Laboratories (Tucson, AZ) for preparation.
• Analytical Methods: Gold analyzed via fire assay (30g charge) with ICP finish (ALS method Au-AA23). Silver and 32 other elements analyzed via ICP with four-acid digestion (ALS method ME-ICP61a). Over-limit samples for Au, Ag, Cu, and Zn analyzed via ore-grade methods (Au-GRA21, Ag-OG62, Cu-OG62, Zn-OG62).
• Data Verification: David Smith, CPG (VP Exploration), devised and monitored the QA/QC program, verified all drill data, sampling, analytical results, and QA/QC procedures. No limitations on the verification process.
• Additional Asset: 100% owned Sugarloaf Peak Project (La Paz County, AZ) holds a historic 1983 estimate of 100 million short tons @ 0.5 g/t Au (1.5M oz Au). Not verified as a current mineral resource; requires significant data compilation, re-drilling, and verification by a Qualified Person.