title.Silver One CEO Updates on Nevada and Arizona Projects in the Southwest

12/02/2025 – 12:15 AM

Company Plans to Proceed Directly to Pre‑Feasibility at Candelaria

Vancouver, British Columbia—Silver One Resources Inc. (TSXV: SVE) (OTCQX: SLVRF) (FSE: BRK1) (“Silver One” or the “Company”) today provided an operational update on its flagship Candelaria Mine in Nevada and its Phoenix Silver project in Arizona.

Highlights

• Economic study at Candelaria will advance directly to a Pre‑Feasibility Study (PFS).
• Auger drilling of heap‑leach pads to upgrade resources to measured and indicated categories.
• Induced‑polarization (IP) survey at Phoenix Silver nearing completion.
• Ground‑penetrating radar (GPR) and drone‑magnetometer surveys over the high‑grade 417 target, with a possible follow‑up gravity survey.

Gregory Crowe, President and CEO, said: “Moving straight to a PFS at Candelaria is a pivotal step toward development. The study will deliver a more robust economic picture than a PEA and will underpin a Plan of Operations needed to update our permits. At the same time, we are deepening the exploration profile at Phoenix Silver, a district that hosts both high‑grade silver veins and porphyry copper‑silver prospects. 2026 could be a defining year for the Company.”

Candelaria

The Nevada Candelaria property, a former producing mine, now boasts a combined 108.18 million ounces of silver‑equivalent in measured and indicated resources and 29.46 million ounces in inferred resources, according to the May 2025 technical release. Mineralization remains open both down‑dip and along strike, leaving room for additional discoveries through continued drilling.

The resource base has already fed preliminary mine planning, engineering studies, and a cost model that was slated for a PEA by late 2025. However, qualified persons have confirmed that the data set meets the thresholds for a direct move to a Pre‑Feasibility Study. This shift will allow the Company to incorporate more detailed metallurgical testing—particularly the upcoming non‑cyanide large‑column pilot—to optimize gold and silver recoveries while reducing environmental risk. Upgrading the leach‑pad resources to measured and indicated status will further sharpen the economics.

Planned work at Candelaria

• Auger drilling of leach pads (LP1 and LP2) – completion expected early 2026.
• Resource update for leach pads – Q1 2026.
• Pilot tests on large‑column leach using non‑cyanide Extrakt solutions – H1 2026.
• Pre‑Feasibility Study – targeted for Q2‑Q3 2026.
• Plan of Operations – scheduled for H2 2026 to support permit amendments.

Phoenix Silver, Arizona

Potential Porphyry Copper‑Silver Exploration

On 22 September 2025 the Company launched an IP/MT survey aimed at delineating two priority porphyry targets identified by elevated copper‑silver anomalies in historic rock samples. Unexpected catastrophic rainfall in late September and again in early November damaged access roads and postponed field activities. The survey is now expected to wrap by the end of December, with interpretation to follow in early 2026.

The targets lie within a prolific mineral belt that includes Freeport‑McMoRan’s Miami‑Inspiration copper complex, BHP’s Ocelot prospect, and multiple other copper‑silver projects spanning over 50 kilometers. Successful delineation could position Phoenix Silver as a multi‑metal developer in a region with established infrastructure and proven logistics.

High‑Grade Silver Exploration

Drilling of the east‑west structural corridor at the “417” area in late 2024 intersected anomalous silver along with copper, lead, and zinc signatures. While mineralized intervals were encountered, the expected massive, high‑grade silver zones were not continuous, hinting at either spaced ore shoots or deeper‑lying mineralization.

To refine the target geometry, a ground‑penetrating radar survey and a high‑resolution drone‑magnetometer sweep are slated for late 2025 to early 2026. Pending favorable results, a targeted gravity survey could be added to enhance depth perception and guide the next phase of infill drilling.

Ongoing and planned work at Phoenix Silver

• IP/MT survey – fieldwork expected to finish by year‑end 2025; interpretation early 2026.
• Rock sampling of veins, dumps, and altered zones completed October 2025; assay results pending.
• GPR and drone‑magnetometer surveys over the 417 target – data collection late 2025–early 2026, with subsequent interpretation.
• Conditional gravity survey over 417 – to be deployed if GPR/magnetometer data identify compelling anomalies.

Qualified Person

The technical content of this release has been reviewed and approved by Robert M. Cann, P. Geo, a Qualified Person as defined by National Instrument 43‑101 and an independent consultant to the Company.

About Silver One

Silver One focuses on the exploration and development of high‑quality silver assets. The Company holds a 100 % interest in the historic Candelaria Mine, where re‑processing of legacy leach pads could generate near‑term cash flow while the broader resource base is advanced toward full‑scale production. Additionally, the Company controls 636 lode claims and five patented claims on the Cherokee project in Lincoln County, Nevada, which hosts multiple silver‑copper‑gold vein systems extending over 11 kilometers.

Silver One also owns 100 % of the Silver Phoenix Project, a high‑grade native silver prospect situated within Arizona’s “Silver Belt” and adjacent to the prolific copper districts around Globe, Arizona.

Forward‑Looking Statements

This release contains forward‑looking statements that reflect management’s current expectations and assumptions. These statements are subject to risks and uncertainties, including limited operating history, financing requirements, permitting timelines, and compliance with environmental and governmental regulations. Actual results may differ materially from those expressed or implied herein. The Company does not undertake any obligation to update these statements, except as required by law.

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