Primero’s exploration campaign extends top-producing vein at San Dimas

An exploration programme at the San Dimas precious metals mine, in Durango state, Mexico, had extended the mine’s top-producing vein beyond a minor vault that was previously regarded as its limit, TSX- and NYSE-listed Primero Mining reported this week. The 2014 exploration programme was delivering a host of positive results at the top-producing Roberta vein, with intercepts beyond the minor vault returning 24.4 g/t gold and 258 g/t silver over 3.4 m (RO14_349) and 28.3 g/t gold and 239 g/t silver over 2.4 m in hole RO14S_347.