Sierra Madre Announces Revenues in Excess of US$2.4 Million from Sustained 350 Tonne per Day Production at La Guitarra September 24, 2024 / Gambusino Prospector 2024-09-23 Sierra Madre Gold and Silver, Update. sierramadrego09242024-nrDownload Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like this:Like Loading…