The delegation was addressed by the Technical Manager who provided a brief history of mining in Bolivia as well as that of Comibol. The salient points in the manager's presentation included the following: . The first silver coin was made in Bolivia. . Comibol was only an administrative office and did not participate in production between 1982 and 2005. . Comibol is currently exporting tin. . Comibol has a copper project in Coro-Coro, which produces laminated copper. . The corporation has two processing facilities which process 50 000 tons of copper per year. . There is a silver smelting facility that was built in 1982 but was not operated because of insufficient production levels. The corporation is currently operating the facility after a Canadian company left it idle for five years following the conclusion of a partnership agreement. The company that built the facility has been contracted to assist in operating it. . It is estimated that 70 per cent of Bolivian territory is still unexplored.