A company owned by Russian billionaire Alisher Usmanov is in talks to raise $1.25 billion from Russian banks by the start of 2019 to build a massive mining and metallurgical plant at Russia's biggest untapped copper deposit.
The proposed tax, to be applied on the nominal value of extracted metals, would affect copper miners that produce more than 12,000 tonnes of the metal and those extracting 50,000 tonnes of lithium a year.