Sidney Resources Confirms Exceptional Rare Earth & Critical Metal Concentrations in Idaho's Historic Warren Mining District

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Sidney Resources Confirms Exceptional Rare Earth & Critical Metal Concentrations in Idaho's Historic Warren Mining District Sidney Resources Confirms Exceptional Rare Earth & Critical Metal Concentrations in Idaho's Historic Warren Mining District WARREN, ID / ACCESS Newswire / November 4, 2025 / Sidney Resources Corporation (OTCID:SDRC) ("Sidney" or the "Company") is pleased to announce breakthrough metallurgical results from its Warren Mining District project in Idaho, confirming exceptional grades of rare earth elements (REEs), tungsten (W), and platinum-group metals (PGMs). Testing was conducted jointly with Western Frontier Exploration and Mining Company under the guidance of industry experts Steve Dobson and Guy Saco. Recent processing of ore from the Knott Vein and Lucky Ben Vein systems demonstrates extraordinary mineral concentration using gravity-based separation methods: ● Knott Vein Residuals: Up to 55% Total Rare Earth Element content (TREO) and 65% Rare Earth Oxide equivalent (REO)● Lucky Ben Concentrates: Up to 30% TREO and 36% REO, achieved solely through mechanical gravity concentration, without chemical leaching Prior to REE testing, the majority of precious metal bearing material which contain gold, silver and the platinum group metals was separated out of these concentrates, confirming multi-commodity extraction potential. These grades compare favorably to, and in some cases exceed the target concentration levels of all domestic processors of rare earths. The results underscore the Warren District's significance as a high-grade domestic source of critical materials supporting U.S. energy, technology, and defense supply chains. CEO Comment"Our press release last week (10/28/2025 PR) highlighted the breakthrough REE values achieved from both gravity and leach processing, and we want to provide investors and strategic partners with deeper clarity and confidence," said Sean-Rae Zalewski, CEO of Sidney Resources Corporation. "Today's announcement includes the detailed laboratory reports, oxide-conversion tables, and processing data that validate those results. What matters most is what this means for the Company going forward: we now have verified, high-grade critical-mineral concentrate and residual streams, produced with environmentally low-impact methods and at recoveries that strongly support near-term commercializ...

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