Jun. 30, 2009 (China Knowledge) - Aluminum Corp of China (Chinalco), the parent of China's largest aluminum producer Chalco<601600><2600><ACH>, decided to subscribe shares of Australian iron ore miner Rio Tinto, which plans to raise US$15.2 billion through share issuance, sources reported.Chinalco, which holds a 9.3% stake, is Rio Tinto's largest shareholder. It will purchase new
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