Pinnacle Reopens Additional Historic Mine Workings at El Potrero and Samples up to 26.1 g/t Au and 511 g/t Ag
Pinnacle advances its high-grade epithermal vein system toward near-term production with renewed underground sampling.
Pinnacle Silver and Gold Corp. announced the reopening of historic underground workings at its El Potrero project in Durango, Mexico. Channel sampling in the newly accessible Dos de Mayo Norte area returned high-grade intercepts up to 26.1 g/t Au and 511 g/t Ag over 0.50 metres.
Results confirm vertical continuity between the main mine level and surface, outlining a sub-vertical shoot approximately 30 metres along strike and at least 85 metres in vertical extent. The company plans surface drilling for September-October 2026 to test gaps along the Dos de Mayo vein and drill new targets, including El Capulin and La Estrella.
Combined underground and surface results will feed into an internal resource estimate and preliminary mine plan. This follows a systematic progression of exploration and development activities over the past year, including LiDAR surveys, underground rehabilitation, delineation drilling, and metallurgical testing.
Pinnacle Silver and Gold Corp. (PINN) announced expected, incremental progress toward its goal of a formal production decision by late 2026. High-grade channel sampling results are consistent with previous underground findings, such as the 50.3 g/t Au over 1.7 m reported in January 2026, validating the geological model of low-sulphidation epithermal shoots.
The announcement does not introduce new financing, material changes to project economics, or unexpected operational milestones. It serves as a standard exploration update designed to de-risk the resource model ahead of the planned September-October surface drilling program. Given the market's prior awareness of the drilling schedule and resource estimate timeline, the release aligns with previous guidance.
Pinnacle Silver and Gold Corp. (PINN) is advancing the El Potrero gold-silver project in the Sierra Madre Occidental, Durango, Mexico. The property features a low-sulphidation epithermal breccia vein system with three historic mines—Dos de Mayo, Pinos Cuates, and La Dura—along a 500-metre strike. A previously operational 100-tonnes-per-day processing plant exists on-site and can be refurbished for near-term production.
The company operates under a staged earn-in agreement, securing an initial 50% interest upon production commencement, with the goal of increasing ownership to 100% subject to a 2% net smelter return (NSR) royalty. The project is located within 35 km of four operating mines, providing favorable regional infrastructure and mining expertise.