Chinalco has not yet decided to participate in Rio Tinto's share placement. Regarding whether Chinalco will participate in the rights issue of Rio Tinto, Xiong Weiping stated that Chinalco has not yet decided whether it will participate in Rio Tinto's share placement or increase its stake in the company. Chinalco accused Rio Tinto of being overly aggressive: "It has touched our bottom line." Reuters, Beijing, June 11th -- Xiong Weiping, Chairman and General Manager of Chalco, said on Thursday that a decision has not yet been made.