Pinnacle Silver and Gold Corp. said underground drilling at its El Potrero gold-silver property in Durango, Mexico, has returned assays of up to 59.2 grams per tonne gold and 424 grams per tonne silver, while work at the historic Pinos Cuates mine extended the known mineralized strike length to at least 70 meters. The update builds on the company’s initial drilling disclosure by adding that the mineralized zone now appears to continue farther along strike, an important indicator for defining the scale and continuity of the system.