Sierra Madre Receives Regulatory Approval for Dry Stack Tailings Deposition on Existing Tailings Impoundment, Paste Backfill of Tailings in Underground Workings and Surface Drilling Pad Sites
Sierra Madre Gold and Silver Ltd. (TSXV: SM, OTCQX: SMDRF) (“Sierra Madre” or the “Company”) - https://www.commodity-tv…