Copper One Progresses 2026 Majuba Hill Drilling as MHB-37B Surpasses 2,400 Feet; Initial Assay Results Awaited

Drilling Update and Core Sample Submission for MHB-37B

Copper One confirmed that drilling at MHB-37B has reached 2,389 feet (728 metres), close to the target depth of roughly 2,500 feet (762 metres). The first 1,760 feet (536 metres) of core have been sent to ALS Laboratories, an independent accredited facility in Reno, Nevada, for sample preparation and geochemical analysis. Assay results are awaited and will be released following receipt, review, and completion of the Company’s quality assurance and quality control (QA/QC) procedures.

Submitting core samples to an independent lab is a standard exploration practice, enabling definitive geochemical characterization of mineralization encountered during drilling. This submission timing aligns with Copper One’s statement that the 2026 drilling program is progressing as scheduled.

Visual Mineralization in the ALS Formation

The announcement details visual identification of sulphide minerals in the ALS Formation between approximately 800 feet (243.8 metres) and 1,100 feet (335.3 metres) within MHB-37B. Minerals observed include chalcopyrite, pyrite, and possible sphalerite. The ALS Formation hosts rhyolite porphyry intrusions at Majuba Hill.

Photographs provided show pyrrhotite, pyrite, and chalcopyrite with secondary biotite alteration at 2,389 feet (728 metres), and chalcopyrite within a breccia zone at 1,982 feet (604 metres). The Company emphasizes these visual observations are preliminary and not indicative of mineral grades or widths, consistent with industry and regulatory standards prior to assay confirmation.

ExploreTech AI-Driven Targeting Approach

MHB-37B represents the inaugural ExploreTech AI-assisted core hole in the 2026 drilling campaign. The hole was designed to test AI-based geophysical data modelling combined with breccia mapping from a spring field campaign. This target follows historic drill holes that intersected substantial copper-silver-gold mineralization, demonstrating the AI-assisted method’s role in refining and advancing understanding of known mineralized zones.

The integration of artificial intelligence and machine learning into exploration targeting marks a methodological advancement in mineral exploration. By merging AI analysis of geophysical data with breccia mapping, Copper One aims to identify drill targets with enhanced geological probability. The Company’s application of this technology at Majuba Hill reflects a systematic strategy to optimize drill site selection using integrated technical datasets.

QA/QC and Sampling Procedures

Copper One’s QA/QC program includes insertion of certified reference materials, blanks, and duplicate samples at regular intervals. ALS Laboratories applies internal quality controls as part of standard analytical protocols.

Both drill-core samples from MHB-37B and surface rock samples have been submitted to ALS Laboratories for geochemical analysis. The Company notes that surface rock-chip samples are selective and may not represent mineralization across the property, ensuring transparency regarding sampling limitations.

Majuba Hill Project Location and Infrastructure Benefits

The Majuba Hill Copper-Silver-Gold Project is situated in Pershing County, Nevada, approximately 113 road kilometres (70 miles) southwest of Winnemucca and 251 kilometres (156 miles) northeast of Reno. Accessible via well-maintained county roads from the Imlay exit on U.S. Interstate 80, followed by a 23-mile westward drive, the project benefits from established infrastructure including road access, power, water, and skilled personnel. These factors reduce exploration and development challenges compared to more remote sites.

Ranked as the #1 mining jurisdiction globally in the Fraser Institute’s 2022 Annual Survey of Mining Companies, Nevada offers a stable, mining-friendly regulatory environment with a strong history of responsible mineral development. The property spans approximately 9,684 acres and is a historical producer with an extensive exploration database comprising about 89,395 feet of drilling to date.

Historical Exploration and Known Mineralization

Copper One highlights that Majuba Hill hosts a large copper-silver-gold mineralized system that remains open for further evaluation. The extensive historic drilling record of approximately 89,395 feet provides a solid technical foundation for ongoing exploration. Previous drilling intersected significant mineralization, guiding the selection of MHB-37B as a follow-up target.

The Company acknowledges that additional drilling and technical studies are necessary to define the extent, continuity, and economic potential of the mineralized system. This reflects the exploration-stage nature of the project and inherent uncertainties in mineral exploration requiring progressive data acquisition.

Broader Exploration Portfolio of Copper One

In addition to Majuba Hill, Copper One holds a 100% interest in the Redonda Copper-Molybdenum Project northeast of Campbell River in British Columbia’s Vancouver Mining Division. Covering approximately 2,746.46 hectares (6,786 acres) across nine mineral claims, Redonda hosts a porphyry-style copper-molybdenum system within the Coast Suture Zone, an area known for significant porphyry copper and skarn mineralization. The Company views Redonda as a promising long-term exploration asset.

Copper One also has an option to earn up to 100% interest in the Redhill Property south of Ashcroft, British Columbia, adjacent to the Trans-Canada Highway. This 4,736-hectare (11,704-acre) property contains volcanogenic massive sulphide (VMS) mineralization prospective for copper, zinc, silver, and gold, with potential for epithermal gold mineralization. Pending transaction completion, the Company will also acquire the Sport Project in Utah, expanding its North American copper exploration portfolio.

Company Strategy and Industry Context

Copper One Resources Corp. focuses on acquiring and advancing high-potential copper, copper-silver-gold, and copper-molybdenum projects to address growing global demand for critical metals essential to electrification, AI infrastructure, data centres, renewable energy, defence, and power system modernization. This strategic focus aligns with industry trends securing metals vital to the energy transition and technology infrastructure.

The Company advances its portfolio through systematic exploration, modern geological modelling, and disciplined technical evaluation. Copper One remains committed to responsible exploration, technical transparency, and delivering long-term shareholder value by progressing critical metals projects across North America.

Upcoming Milestones and Assay Timeline

Drilling at MHB-37B continues toward the planned total depth of approximately 2,500 feet (762 metres). Upon completion, assay results will be reviewed and disclosed following QA/QC validation. The announcement does not specify exact timing for future assay releases.

President and CEO David Greenway commented that with initial assays pending, the Company is entering an exciting phase of the program. As drilling advances, Copper One anticipates evaluating results while preparing subsequent drill holes. Details on the number or timing of additional 2026 drill holes were not provided.