Rio Alto Mining Ltd.

VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 03/11/11 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DBFrankfurt: MS2) is pleased to announce the appointment of Victor Gobitz and Sidney Robinson to its Board of Directors.

CALGARY, ALBERTA -- (Marketwire) -- 02/18/11 -- Rio Alto Mining Limited (the 'Corporation') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DBFrankfurt: MS2) announces that Mr. Feisal Somji has resigned as a director and officer of the Corporation.

Mr. Somji served as the President and Chief Executive Officer of the Corporation from May 2007 to June 2010 and most recently as the Corporation's Vice President Corporate

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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 US$49 million cash.

NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR DISSEMINATION IN THE UNITED STATES. VANCOUVER, BRITISH COLUMBIA -- (Marketwire - Jan. 20, 2011) - Rio Alto Mining Limited ("Rio Alto") (TSX VENTURE: RIO) (OTCQX: RIOAF) (BVLAC: RIO) (DBFrankfurt ...

NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR DISSEMINATION IN THE UNITED STATES. VANCOUVER, BRITISH COLUMBIA -- (Marketwire - Dec. 23, 2010) - Rio Alto Mining Limited ("Rio Alto") (TSX VENTURE: RIO) (BVLAC: RIO) (OTCQX: RIOAF) (DBFrankfurt ...

CALGARY, ALBERTA -- (Marketwire) -- 12/20/10 -- Rio Alto Mining Limited ('Rio Alto' or the 'Company') (TSX VENTURE: RIO) (OTCQX: RIOAF) (BVLAC: RIO) (DBFrankfurt: MS2) is pleased to provide an update on activities at the La Arena Gold Oxide Project ...

CALGARY, ALBERTA -- (Marketwire) -- 12/07/10 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO) (OTCQX: RIOAF) (BVLAC: RIO) (FRANKFURT: MS2) is pleased to announce that Mr. Paul Tweddle has been appointed as Vice President of Planning/Risk ...

CALGARY, ALBERTA -- (Marketwire) -- 12/02/10 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DBFrankfurt: MS2) is pleased to announce that has closed the final tranche of its previously announced private placement of common shares for gross proceeds of C$895,944 (US$879,945). At this final closing, a total of 533,300 common shares were sold at the issue price of C$1.68 (US$1.65

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CALGARY, ALBERTA -- (Marketwire) -- 12/01/10 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DB Frankfurt: MS2) is pleased to announce that has closed the second tranche of its previously announced private placement of common shares for gross proceeds of C$6,562,722 (US$6,445,530). At this second closing, a total of 3,906,382 common shares were sold at the issue price of C$1.68

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CALGARY, ALBERTA -- (Marketwire) -- 11/30/10 -- Rio Alto Mining Limited ('Rio Alto') (TSX VENTURE: RIO)(OTCQX: RIOAF)(BVLAC: RIO)(DBFrankfurt: MS2) is pleased to announce that has closed the first tranche of its previously announced private placement of common shares for gross proceeds of C$12,812,646 (US$12,583,849). At this closing a total of 7,626,575 common shares were sold at the issue price of C$1.68

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