Rio Tinto Plc (ADR)

LONDON, UK, Nov. 22, 2011 /CNW Telbec/ - Rio Tinto today received Canadian Competition Bureau clearance for its offer, made through an indirect wholly-owned Canadian subsidiary, to acquire all the common shares of Hathor Exploration Limited ('Hathor') for C$4.70 in cash per common share.

The Commissioner of Competition issued a 'no action

        --  Rio Tinto to make an all-cash offer for all the common shares
            of Hathor for C$4.15 per common share, representing a premium
            of more than 55 per cent to Hathor's unaffected closing price
            on 25 August 2011.
        --  Hathor's board unanimously recommends shareholders accept the
            Rio Tinto

CALGARY, ALBERTA -- (Marketwire) -- 02/09/11 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DBFrankfurt: MS2) is pleased to announce that it has exercised its option and has acquired 100% of La Arena gold-copper project ('La Arena Project') located in north-central Peru upon payment of the exercise price of