Oso Negro is a historic mining district with outcropping veins returning samples up to 2,680 g/t silver and 100.5 g/t gold from dump samples. Within the district, numerous veins are known and can be traced for hundreds of metres at surface, including the El Sahuaro, El Prospecto, Santa Rosa, Del Monte, Tere, and El Manchuri Veins.
Systematic exploration work is underway and will advance the known vein occurrences to a drill decision point.
