Pinnacle Silver & Gold has been delineating new zones of mineralisation at the El Potrero project in Mexico, after preparations for an ongoing underground drilling campaign uncovered new areas of the old mine that were previously unknown. Systematic sampling of these areas has shown continuity of mineralisation and added considerably to Pinnacle's confidence in the prospectivity and potential viability of the whole system. Drilling is ongoing, with the potential for a production decision by the end of the year. Chief executive Bob Archer joins Vox to tell us more