GR Silver receives five-year San Marcial drill permit

Executive Summary

• GR Silver Mining received a five‑year drill permit for the San Marcial area of the Plomosas silver project, authorizing step‑out and exploration drilling at 46 new sites.
• The permit imposes no limits on total metres or number of holes, giving the company flexibility to expand its high‑grade silver resource and pursue additional targets.
• Recent summer‑2025 drilling already extended mineralization 100 m below the existing resource and identified a 75‑m intercept (SMS25‑09) grading 293 g/t AgEq, supporting a robust epithermal system and indicating strong potential for further resource growth.

Key Details

• Permit Scope: Five‑year “informe preventivo” issued by SEMARNAT authorizing drilling at 46 newly approved sites; no metreage or hole count caps.
• Operational Impact: Enables completion of the final three holes of the 2025 summer program, integration of assay results into a 3‑D model, and planning of future step‑out drilling.
• Recent Drilling Results: Summer 2025 program expanded the mineralized footprint; highlighted SMS25‑09 intercept – 75 m at 293 g/t AgEq.
• Geophysical Work: Planned downhole geophysical surveys to refine targeting of high‑grade silver breccias and support directional drilling.
• Future Plans: Negotiations with third‑party drill contractors for follow‑up programs; continued drilling throughout 2025 using updated models and geophysical data.
• Resource Implication: Extension of high‑grade mineralization 100 m deeper than prior resource outlines, reinforcing the company’s exploration model and indicating material upside for resource expansion.

Notable Quotes

(No direct quotes provided in the release.)