Riverside Resources Announces Completion of Phase One Drilling at Union Project and Now Awaits Drill Assay Results

Core Insights - Riverside Resources Inc. has completed the first phase of drilling at the Union Project in Sonora, Mexico, with over 1,600 meters drilled and more than 700 samples sent to the laboratory for analysis [1][3][7] Drilling Program Highlights - The initial phase involved 12 diamond core holes across six priority targets, focusing on shallow gold and base metals [3][7] - The drilling confirmed key carbonate host units recognized from historical mining activities at Union and Famosa, enhancing the geological model and supporting the potential for a large-scale discovery [3][5] Drilling Update by Area - Union Mine: Three holes targeted manto horizons and chimney/feeder structures adjacent to historic workings to evaluate mineralization continuity typical of Carbonate Replacement Deposit (CRD) systems [4][7] - Famosa Mine Area: Four core holes tested a west-dipping dolomite manto target, with historical small-scale mining reporting gold grades of over 0.5 oz/t Au (over 15 g/t) [5][7] - Union Norte: Two holes tested the manto horizon within dolomitic carbonate strata to evaluate continuity and geometry along favorable trends [6][7] - Cobre and Luis: Each target was assessed for style, structure, and controls on mineralization, showing alignment with a carbonate-hosted metals system [8][7] Sampling and Assays - Core samples were logged, saw-cut, and half-core samples shipped for analysis, with the first eight holes sent to Bureau Veritas for gold fire assay and further analysis in Vancouver [11][12] - The final four holes were sent to ACT Labs in Zacatecas for similar processing methods [11][12] Next Steps - Following the receipt of assay results, the company plans to integrate exploration results and refine the CRD model, preparing for a Phase 2 exploration campaign likely to occur in the first half of 2026 [13]