Rio Alto Mining Limited ("Rio Alto" or the "Company")
(TSX:RIO)(LMA:RIO)(NYSE:RIOM)(DB Frankfurt:MS2) is pleased to announce that its
La Arena Gold Mine produced 54,517 ounces of gold during the three months ended
June 30, 2014 (48,427 ounces of gold poured for the three months ended June 30,
2013). 


107,979 ounces have been produced at La Arena during the six months ended June
30, 2014 compared with 84,783 ounces for the six months ended June 30, 2013. 


Ore and waste production from the La Arena Gold Mine for the second quarter of
2014 is summarized as follow:




              Actual                  Planned                Difference     
                       Au  Strip                Au  Strip    Tonnes      Au 
            Tonnes    gpt  Ratio     Tonnes    gpt  Ratio      /Ozs     gpt 
        --------------------------------------------------------------------
                                                                            
Ore                                                                         
 mined   3,943,278   0.51   1.01  3,224,434   0.66   1.51   718,844   (0.15)
Waste                                                                       
 mined   3,984,228                4,852,621                (868,393)        
                                                                            
Ounces                                                                      
 poured     54,517                   58,571                  (4,054)        



Gold production came in below expectation for the quarter due to negative grade
difference of 0.15 gpt versus budgeted grade mined, partially offset by a
718,844 tonne positive difference versus budgeted ore tonnes mined. 


Ore and waste production for Q2 2014 compared to Q2 2013 is summarized as follow:



             Q2 2014                  Q2 2013                Difference     
                       Au  Strip                Au  Strip    Tonnes      Au 
            Tonnes    gpt  Ratio     Tonnes    gpt  Ratio      /Ozs     gpt 
        --------------------------------------------------------------------
                                                                            
                                                                            
Ore                                                                         
 mined   3,943,278   0.51   1.01  3,001,082   0.65   2.06   942,196   (0.14)
Waste                                                                       
 mined   3,984,228                6,242,967              (2,258,739)        
                                                                            
Ounces                                                                      
 poured     54,517                   48,427                   6,090         



Gold production in Q2 2014 was 6,090 ounces better than the corresponding period
of 2013 because ore production was 30 per cent higher partially offset by a
decline in grade of 0.14 gpt. 


The Company maintains its previous gold production guidance of 200,000 to
220,000 ounces of gold in 2014. 


The Company's financial results for the quarter ended June 30, 2014, including
capital and operating costs, will be released by mid-August. 


"Gold production at La Arena is now progressing on a consistent basis from
quarter to quarter with lower overall grades more than offset by a lower overall
strip ratio. Cost optimization activities continue at the mine and our
expectation is for a solid financial result for the quarter," commented Alex
Black, President & CEO.


Forward-Looking Statements

This news release contains certain forward-looking information including a
statement concerning future production. All statements included herein, other
than statements of historical fact, are forward-looking information and such
information involves various risks and uncertainties. There can be no assurance
that such information will prove to be accurate, and actual results and future
events could differ materially from those anticipated in such information. A
description of assumptions used to develop such forward-looking information and
a description of risk factors that may cause actual results to differ materially
from forward-looking information can be found in Rio Alto's disclosure documents
on the SEDAR website at www.sedar.com. Rio Alto does not undertake to update any
forward-looking information except in accordance with applicable laws.


To learn more about Rio Alto Mining Limited, please visit: www.rioaltomining.com
or Rio Alto's SEDAR profile at www.sedar.com.


ON BEHALF OF RIO ALTO MINING LIMITED

Alex Black, President & CEO 

FOR FURTHER INFORMATION PLEASE CONTACT: 
Rio Alto Mining Limited
Alex Black
President & CEO
+511 625 9900
alexb@rioaltomining.com


Rio Alto Mining Limited
Alejandra Gomez
Investor Relations
604.628.1401
866.393.4493 (FAX)
alejandrag@rioaltomining.com
www.rioaltomining.com