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Rio Alto Reports the Resumption of Operations at La Arena

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Apr 10, 2013) - Rio Alto Mining Limited (the "Company") (RIO.TO)(RIOM)(RIO.TO)(MS2.F) advises that normal operations have resumed at La Arena mine site. Yesterday, the Company announced that operations were halted due to an industrial incident.

ON BEHALF OF THE BOARD OF RIO ALTO MINING LIMITED

Alex Black, President & CEO