Copper miner Herencia Resources has found more copper at a project in Chile.Herencia said it had uncovered further significant high-grade copper, this time from sampling of the '40m shaft' underground mining area at its advanced Picachos copper project in central Chile.Managing Director Graeme Sloan said the copper had been found at shallow depths, meaning it would only take a relatively modest amount of time and money to drill the area and turn it into an exploitable resource."The high-grade results to date are seen as very encouraging," he added.PW