 Later in October Rio Tinto helped Ivanhoe gain access to a $350 million credit facility which Oyu Tolgoi needed for further development.2008 - In January Ivanhoe Mines raised $117.9 million through a series of private placements one of which increased its interest in SouthGobi (when it converted preferred shares into common shares).Also that month the newly discovered Heruga Deposit at Oyu Tolgoi was for the first time officially acknowledged (estimates completed) as having a substantial resource of copper, gold and molybdenum.