http://www.mongoliaonline.com/Mining/rio-to-spend-c245-million-increasing-ivanhoe-stake/ March 1 (Bloomberg) -- Rio Tinto Group, the world’s third- largest mining company, will spend C$245 million ($233 million) to increase its holding in Ivanhoe Mines Ltd., its partner in the Oyu Tolgoi project in Mongolia. Rio will buy 15 million shares at C$16.31 each, the London- based company said today in a statement to the Australian Stock Exchange. That will lift its h... Sun, 28 Feb 2010 14:54:34 EST en