Sierra Madre Announces Guitarra Processing Plant Achieves Throughputs of up to 720 Tonnes per Day as Development at Nazareno and Guitarra Mines Accelerates

Vancouver, British Columbia–(Newsfile Corp. – September 28, 2026) – Sierra Madre Gold and Silver Ltd. (TSXV: SM) (OTCQX: SMDRF) (“Sierra Madre” or the “Company”) is pleased to provide an operational update on activities at its Guitarra silver-gold mine complex in Estado de Mexico, Mexico.Throughput at the Guitarra processing plant has significantly increased following Phase 1 expansion modifications to the existing crushing and milling circuits. Daily production has reached up to a steady 720…

Source: https://www.newsfilecorp.com/release/316366/Sierra-Madre-Announces-Guitarra-Processing-Plant-Achieves-Throughputs-of-up-to-720-Tonnes-per-Day-as-Development-at-Nazareno-and-Guitarra-Mines-Accelerates