Pinnacle hits 97.8% gold recovery at El Potrero Dos de Mayo vein

VANCOUVER, BRITISH COLUMBIA – TheNewswire - June 2, 2026 - (TSXV: PINN, OTCQB: PSGCF, Frankfurt: P9J) – Pinnacle Silver and Gold Corp. (" Pinnacle " or the “ Company ") is pleased to provide more positive results from the second round of scoping metallurgical tests for the high-grade El Potrero gold-silver project in Durango, Mexico.  This second round of tests was broader in scope, including seven samples compared to three in the first round, and encompassed all three historic mines on the Dos de Mayo vein rather than just the Pinos Cuates mine, as well as the Estrella and Capulin veins.   Of particular note, bottle roll leach tests for the Dos de Mayo vein continued to return consistently high gold recoveries, averaging 97.8%, while gold recoveries of 97.6% and 97.4% were obtained for the Estrella and Capulin veins, respectively.  Silver continues to be more variable due to a more complex mineralogy; however, recoveries increased to an average of 70.02% for Dos de Mayo, 64.7% for La Estrella and 80.5% for El Capulin. Highlights: Seven mineralized samples were sent to the SGS Lab in Durango, Mexico for a second round of metallurgical testing, including five samples from the three historic mines on the Dos de Mayo vein, one from the Estrella vein and one from the Capulin vein.   Head assays from the seven samples averaged 7.7 grams per tonne gold (g/t Au) and 116 g/t silver (Ag), implying a robust grade for future mill feed.    Seven corresponding sub-samples were sent to the SGS lab in Santiago, Chile for TIMA-X mineralogical analyses.  Gold in the form of electrum, a natural Au-Ag alloy, was detected in all seven samples.  In addition to the electrum, silver was also detected in all seven samples as corresponding to