China on Friday weighed into the bidding battle for the world’s minerals deposits when it launched the largest-ever dawn raid to snap up a 9 per cent stake in Rio Tinto, the UK-listed mining giant at the centre of a takeover battle.
Chinalco, a state-owned mining company, in a joint exercise with Alcoa, the US aluminium group, spent $14bn in a move designed to block a planned $119bn takeover bid from rival miner BHP Billiton.



