Mining News Flash with IsoEnergy and Premiere American Uranium

Key Concepts

• U3O8: Triuranium octoxide, the most common form of uranium concentrate (yellowcake) used as a standard for measuring uranium ore grade.
• Hurricane South Trend: A geological zone identified by ISO Energy as a high-potential area for uranium mineralization expansion.
• Metallurgical Testing: The process of analyzing ore to determine the most efficient methods for extracting uranium.
• Bottle Roll Recovery Tests: A laboratory-scale test used to determine the potential recovery rate of uranium from ore samples.
• Column Leaching: A process simulating heap leaching to understand how uranium can be extracted from crushed ore on a larger scale.
• Preliminary Assessment (PA): A study providing an initial economic evaluation of a mineral project.

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ISO Energy: Larok East Project Exploration Results

ISO Energy has released the assay results from its 2026 winter exploration drilling program at the Larok East project, which contains the high-grade Hurricane deposit.

• Key Findings: Drilling confirmed high-grade uranium mineralization within a newly interpreted fault zone along the "Hurricane South Trend."
• Assay Highlights:
  • 4.21% U3O8 over 3.5 meters, including a high-grade interval of 11.61% U3O8 over 1 meter.
  • Additional intersections include 2.75% U3O8 over 0.5 meters and 1.75% U3O8 over 0.5 meters.
• Strategic Implications: These results validate previous radioactivity readings and suggest that the mineralization extends significantly beyond the currently defined resource area.
• Future Outlook: A follow-up summer drilling program is scheduled, consisting of 20 drill holes totaling approximately 8,000 meters, aimed at further delineating the Hurricane South Trend.

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Premier American Uranium: Cibolita Project Development

Premier American Uranium has initiated a drilling program at the Cibolita project in New Mexico, focusing on metallurgical data collection.

• Operational Scope: The program involves up to 16 core holes targeting the Soho areas 1, 2, and 3.
• Methodology:
  • Sample Collection: Core samples will be recovered to represent underground mine rock.
  • Testing Campaign: Samples will be combined into composites for metallurgical characterization, including bottle roll recovery tests and long-term column leaching tests.
• Objective: The primary goal is to optimize uranium recovery assumptions for the upcoming 2025 Preliminary Assessment (PA).
• Timeline: The laboratory program is expected to be completed by June 2026.

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Synthesis and Conclusion

The updates from ISO Energy and Premier American Uranium highlight a dual focus on resource expansion and technical optimization. ISO Energy is successfully proving the geological continuity of the Hurricane deposit, suggesting significant upside potential for the Larok East project. Simultaneously, Premier American Uranium is transitioning from exploration to technical validation at Cibolita, ensuring that their 2025 economic assessments are backed by rigorous metallurgical data. Both companies are positioning themselves to improve project viability through either increased resource confidence or optimized recovery processes. Investors are directed to the Swiss Resource Capital Uranium Report for further analysis on these developments.