Mongolia puts pressure on Rio Tinto ahead of Oyu Tolgoi talks
February 27, 2013 at 02:12 AM EST
By Terrence Edwards ULAN BATOR, Feb 27 (Reuters) - Mongolia has cancelled a gold mining license indirectly linked to the $6.2-billion Oyu Tolgoi copper and gold project, stepping up pressure on world No.3 miner Rio Tinto ahead of talks on the project set for Wednesday.