Silverco Mining Releases Additional Assays, Drilling 3.4m Grading 425 g/t AgEq at Cusi

Executive Summary

• Silverco Mining released the final assay intercepts from its 15,000 m 2025 diamond‑drill program at Cusi, highlighting multiple high‑grade silver‑equivalent (AgEq) intersections on the San Miguel and Eduwiges targets.
• The results support an upcoming Mineral Resource Estimate (MRE) slated for December 2025 and indicate continued vein extension both along strike and across the Cusi fault, expanding the potential resource base.
• Company plans to transition to underground drilling at Eduwiges after mine rehabilitation and to prioritize underground work at Promontorio, underscoring a strategic move toward future production restart.

Key Details

• San Miguel Target – High‑Grade Intercepts
• Hole CU‑25‑35: 3.4 m @ 425 g/t AgEq (incl. 0.8 m @ 1,409 g/t AgEq).
• Hole CU‑25‑33: 1.2 m @ 554 g/t AgEq; also 0.6 m @ 272 g/t AgEq.

• Hole CU‑25‑31: 0.3 m @ 413 g/t AgEq.

• Eduwiges Target – Infill & Fault‑Crossing

• Hole CU‑25‑36a: 1.5 m @ 764 g/t AgEq (terminated due to deviation tolerance).

• Hole CU‑25‑34: 1.1 m @ 259 g/t AgEq.

• Additional Notable Intercepts

• Hole CU‑25‑30 (Matulera): 0.6 m @ 178 g/t AgEq.

• Hole CU‑25‑35 (San Miguel) – lower‑grade: 1.5 m @ 194 g/t AgEq.

• Drill Program Overview

• Total planned surface diamond drilling: 15,000 m; ~75 % complete as of release.
• Assay results expected to continue through Q4 2025 and into Q1 2026.

• Core HQ up to 400 m depth; deeper intervals NQ.

• Geological Context

• Vein system hosted in rhyolite lapilli tuff, steeply dipping (70‑80°), with widths ranging from <1 m to >5 m.

• Structural model indicates a post‑mineral fault displaces veins eastward; downthrown blocks remain prospective for high‑grade silver mineralization.

• Future Plans

• Mineral Resource Estimate update scheduled for December 2025.
• Underground drilling at Eduwiges planned after mine rehabilitation to leverage existing infrastructure and reduce surface drill metres.
• Continued underground work prioritized at Promontorio.

Notable Quotes

“These results provide the final set of assays for inclusion in our upcoming Mineral Resource update… We expect to publish the Resource update in December.” – Mark Ayranto, CEO

All non‑material boilerplate and forward‑looking disclaimer text have been omitted.