Zacatecas Silver Receives Drill Permit and Finalizes Maiden Drill Program at Oso Negro, Sonora October 29, 2026 / gambusinoprospectormexico 2026-10-29_zacatecas silver receives drill permit for el oso project_sonDownload Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like this:Like Loading…