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References in periodicals archive ?
The operation of the Colquiri tin-silver mine was put up for tender and formally passed to the only bidder, Cia Minera del Sur (Comsur), in February.
In Australia, Nicron Resources' expansion at the Woodcutter's mine in the Northern Territories included a 2.75 m unit for zinc roughing and two 2.13 m units for zinc and lead cleaning, and in Bolivia|1~, Compania Minera del Sur's (Comsur) Porco Mine installed a 2.13 m zinc cleaner and two 0.914 m dia.
At the time of writing six companies (Comsur and Tiwanaku from Bolivia, and Minproc, Pan-Andean Resources, Cyprus, and Brunswick Mining and Smelting from abroad) have declared an interest in a possible joint venture but Golden Star had decided to pull out of Bolivia declaring Bolivar |under present circumstances not an interesting project'; Comibol has invited firm proposals from interested parties to be made by mid-April.