BUZZ-Turquoise Hill Resources Ltd: Files tax dispute notice in Mongolia
** Canadian miner's U.S.-listed shares down 5.3 pct at $3.23
** Company files notice of dispute with Mongolia government after tax authorities claim unpaid taxes and penalties related to development of its Oyu Tolgoi gold and copper mine
** Turquoise Hill owns 66 pct of Oyu Tolgoi mine
** Company says mine has paid all legally required taxes and charges
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