Rio Alto Mining Limited (TSX: RIO; BVL: RIO; NYSE: RIOM; Frankfurt: MS2) is a Canadian based resource company focused on the development of the 21,000 ha La Arena gold / copper project, located in north central Peru, the most prolific gold mining district in the country.

The district is home to a number of world class and medium size gold mines including Barrick Gold's Lagunas Norte Mine, 15 km west of La Arena (2012 production: 754,000 ounces of gold ), Newmont's Yanacocha Mine, 100 km to the north (2012 production: 1.35 million ounces of gold), and 10km to the north of the privately owned La Virgen Mine (2012 production: approx 50,000 ounces of gold).

La Arena contains 5.5 million ounces gold (1.7 million in oxide and 3.8 million in sulphide) and 3.7 billion pounds copper in measured & indicated resources with additional inferred resources of 0.18 million ounces gold and 1.3 billion pounds copper**. First gold production at La Arena occured on May 6, 2011 and 201,113 ounces of gold were poured in 2012.

Rio Alto is also in the business of acquiring, exploring, and developing gold resources and advanced stage exploration projects in Peru and Latin America. The Company has assembled a highly experienced team with a proven history of developing, financing, and operating mining projects in Latin America. With a focused strategy of mine production and development and an exploration strategy to discover additional mineral resources, Rio Alto is strongly positioned to generate significant value for its shareholders.

* All disclosure regarding production of third parties are taken from publicly available information produced by the applicable third parties and while Rio Alto believes the information to believable, it has not independently verified the information.

** All technical and scientific information included in this website has been taken from the National Instrument 43-101 (“NI 43-101”) compliant “La Arena Project, Peru, Technical Report” prepared by Kirk Mining Consultants Pty Ltd. with an effective date of January 1, 2013, and the NI 43-101 compliant “La Arena Project, Peru” technical report prepared by Coffey Mining Pty Ltd. with an effective date of July 31, 2010. The disclosure in this website of scientific and technical information regarding Rio Alto's mineral properties, including reserve and resource estimates and the description of the geology has been reviewed by Enrique Garay, a certified professional geologist, employed by Rio Alto as VP of Geology. Mr. Garay is a Qualified Person for the purposes of NI 43-101. These two reports referenced herein are available on this website under the heading "Investors- Reports and Filings." Readers are encouraged to read these reports in their entirety, including all qualifications, assumptions and exclusions that relate to the scientific and technical information set out in this website and any technical and scientific information on this website is qualified in their entirety by the reports. Readers are advised that mineral resources that are not mineral reserves do not have demonstrated economic viability.