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Whistlejacket update
Bradda Head Lithium Ltd has announced promising new surface sampling assay results from its Whistlejacket Lithium Project in Arizona, with eighteen out of sixty samples exceeding 0.59% Li₂O, including a high of 3.03% Li₂O, indicating strong lithium prospectivity. The company has also formally established a Technical Committee with Rio Tinto subsidiary Kennecott Exploration Company to oversee exploration efforts, with plans for further sampling to refine drill targets and advance drilling campaigns in 2026. These developments, coupled with a focus on ESG initiatives and local stakeholder engagement, position Bradda Head to advance its US lithium portfolio. Disclaimer*
About this update from Bradda Head Lithium Limited
15 June 2026 Bradda Head Lithium Ltd ("Bradda", "BHL" or the "Company") Bradda Head Samples up to 3.03% Li2O and Expands Lithium Potential at Bradda's Whistlejacket Spodumene Lithium Project in Arizona USA Bradda Head Lithium Ltd (AIM: BHLL), the North America-focused lithium development group, is pleased to announce that, following the recent approval of the Exploration and Drilling Permit (see announcement dated 26 May 2026), new surface sampling assay results at the Whistlejacket Lithium Project demonstrates strong lithium prospectivity across multiple target areas. Additionally, Bradda Head Lithium and Rio Tinto subsidiary Kennecott Exploration Company ("KEX"), have also completed their first technical meeting and formally established the Technical Committee for the Whistlejacket project in Arizona. The meeting included a review of the current exploration programs, technical priorities, and upcoming drill targets identified across the project area. Highlights: · High values of 3.03 % Li2O, eighteen (18) samples exceeding 0.59 % Li2O out of 60 samples. · Mostly coarse grained spodumene exhibits minimum surface alteration, an encouraging indication lithium mineralization that could be consistent with depth · More field surface sampling planned · Results from these additional samples will guide and refine drill hole targeting in this and future drilling campaigns · Bradda Head and Rio Tinto subsidiary KEX have formally established a Technical Committee to oversee and direct exploration efforts on the Whistlejacket lithium project in Arizona. · Strong ESG focus through engagement of local contractors, regional stakeholders, and responsible land stewardship practices. Ian Stalker, Executive Chair, commented: "We are highly encouraged by the new assay results from the first stage of our surface sampling programme completed at Whistlejacket. The programme has refined and improved our exploration targeting and further reinforces the project's strong lithium potential. The next set of results will further add to the knowledge base and hopefully add further new targets. We have also achieved several important milestones supporting the advancement of our Arizona lithium exploration portfolio, including the formal establishment of a Technica...
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