These finishes are pre-patinated at the Aurubis mill to create the green/blue/turquoise patina that naturally develops over time with exposure to the environment. The pre-patination process encourages ...

LONDON, Aug 24 (Reuters) - Global miner Rio Tinto (RIO.L), opens new tab, (RIO.AX), opens new tab on Wednesday sweetened its takeover proposal for the 49% of Canada's Turquoise Hill Resources (TRQ.TO) ...

Canadian mining company Turquoise Hill Resources Ltd. is locked in a feud with its largest shareholder, Rio Tinto Plc, over the underground expansion of its massive Oyu Tolgoi copper mine in Mongolia.

Rio Tinto has won over the board of copper developer Turquoise Hill Resources with its $US3.3 billion ($4.84 billion) takeover offer in a major boost for the mining ...

Rio Tinto copper boss Bold Baatar sought to play down the company’s fractious relationship with its Canadian buyout target Turquoise Hill Resources, as the Toronto ...

Global miner Rio Tinto on Wednesday sweetened its takeover proposal for the 49% of Canada’s Turquoise Hill Resources it does not already own by $400 million to an all-cash $3.1 billion. To boost its ...