Silver One commences microgravity survey at Phoenix Silver 417 target

Vancouver, British Columbia--(Newsfile Corp. - September 14, 2026) - Silver One Resources Inc. (TSXV: SVE) (OTCQX: SLVRF) (FSE: BRK1) ("Silver One" or the "Company") is pleased to announce the commencement of a microgravity test survey at the high-grade 417 area of its Phoenix Silver Project in Arizona. This program represents a significant next step in evaluating the potential for very high-grade native silver, as evidenced by near-surface native silver fragments, one of which weighs 190 kilograms (417 pounds) and is estimated to contain up to 70% silver based on specific gravity (see Company news releases February 5, 2020 and July 28, 2020).

The 417 area remains a priority exploration target due to the presence of large native silver fragments near surface and encouraging drill results. Drilling completed in 2024 intersected 3,800 g/t silver and 0.97% copper over 0.35 meters, along with anomalous silver values (10-90 g/t Ag) in 13 of the 30 core holes drilled. Elevated base metals (Cu ± Pb ± Zn) were encountered in all but one hole, highlighting the strength and continuity of the mineralized system (see Figure 1, and February 24, 2025 news release). However, very high-grade concentrations of silver were not encountered in that drilling program. Drill hole distribution and spacing suggests these very high-grade silver bodies may be lense-shaped or cylindrical shape bodies, occurring within the easterly trending 417 structures.

Native silver is also known to occur in historic workings to the northeast of Phoenix Silver and at the Mexican Mine located on the western portion of the property. Additional silver targets were identified by a geophysical ZTEM survey conducted by the company in 2024 (See Figure 2 and Company's news release of February 20, 2025).

Greg Crowe, Silver One President & CEO, commented: "Initiating microgravity surveying at Phoenix Silver is an important advancement in our exploration strategy. This technique provides the potential to detect dense subsurface bodies that conventional drilling may have missed. A successful outcome at the 417 area could support broader application across multiple high-priority targets, including the Mexican Mine and Nuggets North zones."

The newly initiated microgravity survey is designed to detect dense, metallic bodies at shallow to moderate depths-features that may represent the source of the high-grade silver fragments found in the area.

The test program consists of up to 2,800 gravity stations collected on a 5-meter grid. Field acquisition is expected to take approximately 30 days, followed by an additional 30 days for data processing, 3D modeling, and interpretation. Results will be released once the full analysis is finalized.

If the program successfully identifies gravity anomalies consistent with dense metallic accumulations, the Company plans to expand the survey westward to the Mexican Mine area, located roughly 600 meters west of the 417 zone, and to other high-priority targets across the property. These include the Nuggets North area, where a 1.5-kilometre-long train of more than 40 native silver fragments, weighing up to 9 kilograms (20 pounds), has been documented (See Figure 2).