#RioTinto approves $5.3 bln #OyuTolgoi #Copper expansion in #Mongolia

#RioTinto approves development of #OyuTolgoi underground mine. Development of underground mine will start in mid-2016 following approval of a $5.3 billion investment by partners and recent granting of all necessary permits
Read more at: http://www.reuters.com/article/idUSFWN1821AQ

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