Business
Riverside and Questcorp Drilling Advancing at Union Project with Three of Five Targets Progressed
Vancouver, British Columbia--(Newsfile Corp. - September 24, 2025) - Riverside Resources Inc.
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About this update from Riverside Resources Inc
[{"type":"text","content":"Riverside and Questcorp Drilling Advancing at Union Project with Three of Five Targets ProgressedVancouver, British Columbia--(Newsfile Corp. - September 24, 2025) - Riverside Resources Inc. (TSXV: RRI) (OTCQB: RVSDF) (FSE: 5YY0) (\"Riverside\" or the \"Company\") is pleased to announce that drilling at the Union Project in Sonora, Mexico, is progressing on track and on budget, with three of the five main targets now having some initial drilling and work continuing toward completion of the current program. This update follows the Company's July 7, 2025 announcement outlining preparations for drilling and the August 6, 2025 news release marking the start of the program.\"We are pleased to see the Union Project drill program advancing on schedule and on budget, with key targets now being tested,\" commented John-Mark Staude, President and CEO of Riverside Resources. \"The geological information we're gathering, the mineralization indicators, particularly the structural and stratigraphic details, is already refining our exploration model and setting us up for the next stages as the program moves ahead. We look forward to drilling the high-potential Famosa target and to receiving the assay results from the work completed so far as the Riverside team operates working with the drill company.\"The first hole at the Union Mine target was drilled southeast beneath historic workings, cutting through the Clemente and Caborca formations, both key host units for past mining at Union as described in the NI 43-101 report on SEDAR+ filed on May 7, 2025, by Questcorp Mining (QQQ). The hole ended in the Caborca Formation, encountering the distinctive microconglomeratic carbonate unit that historically hosted mineralization at the bottom of the Union Mine. Samples from this hole have been delivered to Bureau Veritas in Hermosillo, Sonora, for gold fire assay, with pulps to be sent to Vancouver, Canada, for ICP-MS analysis with 4-acid digestion to determine silver, base metal, and multi-element values. This consistent analytical approach has been applied since the outset of the Union program to ensure comparability across results.Drilling then moved to the northern part of the project, testing two target areas: the El Cobre Mine area and the North Union Mine area. Here, holes were oriented perpendicular to stratigraphy and toward interpre...