The new vein, named Yessi, has a geochemical signature indicating a potentially different phase of mineralization containing a higher gold to silver ratio and low levels of base metals.
The Peruvian Ministry of Energy and Mines is offering credits to artisanal and small-scale miners with the goal of fostering environmentally friendly practices.
Butterfield Canyon, which once hosted a Rio Tinto Kennecott mine that was part of the Bingham Canyon complex, has turned into the Butterfield Trailhead Regional Park.