Rio Tinto (RIO), Turquoise Hill (T.TRQ) caught in Mongolia tax dispute over Oyu Tolgoi By: Stockhouse Newswire June 23, 2014 at 14:05 PM EDT Rio Tinto (RIO), Turquoise Hill (T.TRQ) caught in Mongolia tax dispute over Oyu Tolgoi Read More >> Related Stocks: Rio Tinto Plc ADR Turquoise Hill Resources Ltd