Riverside Resources Inc.

Riverside Resources Inc.

June 16, 2008 08:30 ET

Riverside Resources Begins Drilling of El Capitan Prospect, Durango, Mexico

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 16, 2008) - Riverside Resources Inc. ("Riverside") (TSX VENTURE:RRI) is pleased to announce it has mobilized a drill rig to its El Capitan Project, a hot spring type gold property located in the same Durango-Zacatecas metalliferous belt as the recent mineral discoveries at Camino Rojo (Canplats), Penasquito (Goldcorp) and San Agustin (Geologix). The current drill target has been identified through the analysis of a recent IP survey combined with field mapping and ground sampling programs completed by Riverside.

"We view El Capitan as a high quality prospect and we will begin drill testing to expand on the previous gold intercepts and test new target areas," said John-Mark Staude, President and CEO, Riverside Resources. "The geology and the mining history combined with our surface sampling and field mapping indicate that there is significant potential for a new discovery. We have been successful at expanding our property position in the Penoles District of Durango in concert with Riverside's growing portfolio of prospective mineral projects in Mexico, and the United States."

The drill program will test the down dip extension from numerous 1g/t to 4 g/t Au surface assays as well as highly anomalous values of As, Hg, Sb, Cu, Zn and Pb. It will also test the lateral extension of previous drilling by Aurcana in 2004 which began to delineate the interpreted hot spring epithermal gold system with 61.4 m of 0.8 g/t Au, including 4.6 m of 6.4 g/t Au. Results from a recent IP survey suggests that the mineralization could project for more than 1km of strike length by 200m of width. Anomalies are open along strike and the initial drill exploration will look to substantiate the continuity of grade rather than test the full scale of the system. A significant jasperoid alteration system that ties in a major structural zone and is part of the old Penoles Company mining area will also be drilled.

In February 2008, Riverside announced that it had secured an option to earn a 100% interest in the core claims of the El Capitan Property. One month later, Riverside staked an additional 350 km2 concession surrounding the El Capitan Property which contains four distinct anomalous areas. Riverside added to its El Capitan land package through the assignment of a recently executed option agreement between Exploraciones del Altiplano ("Altiplano") and a local mineral claims holder. As per the terms of the option agreement, Riverside can earn a 100% interest in the property by making a total of $800,000 USD of payments to the claims holder over a 40 month period with the majority of the payments made in a lump sum at the end of the option period. As per an existing agreement between Altiplano and Riverside, Altiplano will receive an NSR of 0.75% on any future metal production from these claims.

Since Riverside's entry into the Penoles district exploration work has progressed quickly and on budget. Positive results from geologic mapping, geochemical sampling and geophysical surveying demonstrate a district scale mineralization system. Massive and disseminated mineralization was previously mined from the Jesus Maria veins system in the Penoles district which is now under option by Riverside. The area has been mined intermittently for more than 100 years with substantial amounts of gold, silver, copper, lead and zinc being extracted. Field work has identified a number of strong vein structures with multi-kilometer extensions that do not appear to have been exploited in the past. The veins show striking similarity to Orko Silver's La Preciosa Mine located to the south, and Endeavor Silver's Guanacevi Mine located to the north.

The scientific and technical information contained in this news release was prepared under the supervision of Locke Goldsmith, P. Eng., P. Geo., an independent qualified person to Riverside Resources, who is responsible for ensuring that the geologic information provided in this news release is accurate and acts as a "qualified person" under National Instrument 43-101 Standards of Disclosure for Mineral Projects. Samples were prepared by Inspectorate Labs of Durango, Durango, Mexico and then analyzed by Inspectorate Labs of Reno, Nevada, USA using aqua regia digestion on a 15-gram sample followed by ICP-MS analysis.

Riverside Resources operates a prospect generator business model leveraging an experienced management team, a proprietary geological database and local knowledge to identify and acquire high-quality exploration opportunities. In its first year, Riverside has acquired the Sugarloaf Peak Gold Deposit located in Arizona, USA and five properties including the El Capitan Gold Project located in Mexico. For more information please visit: www.rivres.com.

Certain statements in this press release may be considered forward-looking information, which statements can be identified by the use of forward looking terminology (e.g., "expect" or "plans"). Such information involves known and unknown risks - including the availability of funds, the results of financing and exploration activities, the interpretation of exploration results and other geological data, or unanticipated costs and expenses and other risks identified by Riverside in its public securities filings - that may cause actual events to differ materially from current expectations. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Riverside disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

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