Pinnacle Silver & Gold is now in receipt of a permit to drill at surface around old precious metals workings on the El Potrero project in Mexico. The company has already made significant progress drilling from underground in old adits, but can now broaden the scope of its exploration activities. There are also plans afoot to drill an area on a different part of the project that's prospective for polymetallic mineralization believed to be similar to that of the nearby Topia mine. Pinnacle's chief executive Bob Archer joins Alastair Ford at Vox to tell us more