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Carolina Rush Confirms Kilometer-Scale Hydrothermal System at Depth and Identifies Copper Porphyry Vectors at Brewer Project

Toronto, Ontario--(Newsfile Corp. - May 4, 2026) - Carolina Rush Corporation (TSXV: RUSH) (OTCQB: PUCCF) ("Carolina Rush" or the "Company") reports on its

articleCarolina Rush CorporationMay 4, 20264/company/carolina-rush-corporation/news/carolina-rush-confirms-kilometer-scale-hydrothermal-system-at-depth-and-identifies-copper-porphyry-vectors-at-brewer-project
Carolina Rush Confirms Kilometer-Scale Hydrothermal System at Depth and Identifies Copper Porphyry Vectors at Brewer Project

About this update from Carolina Rush Corporation

[{"type":"text","content":" Toronto, Ontario--(Newsfile Corp. - May 4, 2026) - Carolina Rush Corporation (TSXV: RUSH) (OTCQB: PUCCF) (\"Carolina Rush\" or the \"Company\") reports on its recently completed initial 3-hole deep drill program at the Brewer Gold-Copper Project in South Carolina, USA, implemented in partnership with OceanaGold Corporation (\"OceanaGold\") (TSX: OGC / NYSE: OGC) under an earn-in agreement of up to US$20 million in exploration expenditures (see news release dated September 16, 2025). The program represents the first systematic test of Brewer's porphyry potential and was designed to evaluate the source of Brewer's large hydrothermal system. Drilling has confirmed key elements of the Company's geologic model and materially refined targeting toward a potential porphyry copper-gold discovery. Results from B26C-037 (Hole 37) confirm the presence of a large, vertically extensive hydrothermal system characterized by consistent alteration zonation, local porphyry-style veining, and chalcopyrite-bearing copper mineralization. Anomalous chalcopyrite in Hole 37 is notably elevated relative to background levels at Brewer, representing a different mineral assemblage from the known copper mineralization below and near the former mine, which is not chalcopyrite-bearing. Reinterpretation of geophysical data indicates the low resistivity magneto-telluric (MT) anomaly that was targeted represents a peripheral alteration zone, refining the Company's targeting toward higher-priority areas to the northwest, where the system appears to strengthen. Carolina Rush CEO Layton Croft stated: \"Background copper levels at Brewer are less than 50 parts per million (ppm). Hole 37 intersected 410 meters averaging 183 ppm copper, predominantly chalcopyrite, within the top 600 meters. Together with Hole 37's B-type veining and alteration zonation, these results confirm we are clearly within a magmatic-hydrothermal system. While we have not yet identified a porphyry source, our initial deep drilling has materially advanced our understanding of the system and, importantly, refined our targeting towards where we believe such a source may exist. Porphyry copper deposits are typically discovered over multiple drill campaigns, and we are encouraged by our first. Just as important, the scale and continuity of Brewer's large alteration footprint confirm t...

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