Jan 14 (Reuters) - Rio Tinto Ltd
* Rio Tinto maintains shareholding in Turquoise Hill Resources
* Says acquired 510,983,220 common shares of Turquoise Hill at a total cost of C$1.29 billion
* Says no present intention of acquiring additional securities of Turquoise Hill
* Rio tinto says upon completion of rights offering, co owns approximately 50.8 per cent of the outstanding common shares
* Source text for Eikon
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