Riverside Resources Inc. announced that it has entered into a Exploration Earn-In Agreement with Minera Hochschild Mexico, S.A. de C.V. for Riverside's 100% owned La Union Gold-Silver Project in Sonora, Mexico. This new Agreement enables the Project to immediately move ahead with a robust exploration program and reflects the belief, by both parties, of the potential for rapid discovery of new gold-silver and base metal disseminated deposits on the 26 km2 Project. La Union Project is located in western Sonora approximately 70 km southwest of the town of Caborca in the southern portion of the carbonate stratigraphic mountains of the Sierra El Viejo.

The reactive limestone and dolomites formed a carbonate-hosted style of mineralization in the late PreCambrian stratigraphy. Large shear zones are present and potentially provide plumbing and a possible host for precious metals mineralization. La Union has seen small-scale production dating back to the 1950s by Peñoles and local families.

The Project was largely unexplored until 2012, when Paget and Millrock Resources started exploration work. High-grade rock chip samples reported by Paget and Millrock attracted Riverside's attention to La Union which was subsequently acquired by Riverside as part of a five-project portfolio acquisition. Riverside has since worked on expanding its current footprint at the La Union Project after evaluating the existing system of mineralization and its potential.

Riverside sampling highlighted significant mineralization with up to 59.8 g/t gold, 833 g/t silver, 5.8% lead and 4.2% zinc. After completing a claim consolidation in September 2021, Riverside conducted a follow up mapping and sampling program including 103 rock chip samples with the best sample returning 83.2 g/t (2.6 oz/t) Au and 4,816 g/t (150 oz/t) Ag. The work further enhanced Riverside's understanding of the structural and lithological controls by linking the small historical workings into a larger regional context. Although the Project is still in its initial stages, mineralization appears to be of manto-chimney and replacement type within Pre-Cambrian to Cambrian sedimentary rocks.

Following-up on the high-grade sample results, Riverside's team returned and was able to further define the extent of surface mineralization. The highlights of this latest work defined high grade polymetallic samples up to 30% Zn, 83.2 g/t Au, 4,816 g/t Ag, and 10.3% Pb. Of the 103 samples assay values ranged from 83.3 g/t Au to non-detectable with about 30% of the samples returning significant gold, silver, lead and/or zinc values.