Sierra Madre Increases M&I Silver-Equivalent Resources at La Guitarra by 373% to 27.2 million Ounces, Inferred Silver- Equivalent Resource Increased 204% to 20.2 million Ounces
Sierra Madre Gold and Silver Ltd. (TSXV:SM) (OTCQX:SMDRF) (“Sierra Madre” or the “Company”) is pleased…
