Sierra Madre Announces Guitarra Processing Plant Achieves Throughputs of up to 720 Tonnes per Day as Development at Nazareno and Guitarra Mines Accelerates September 28, 2026 / gambusinoprospectormexico 2026-09-28_sierra madre gold and silver provides operational update at its la guitarra mine_state of mexDownload Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like this:Like Loading…