8 June 2026

Bradda Head Lithium Ltd

("Bradda", "BHL" or the "Company")

Bradda Head Joins Defense Industrial Base Consortium, Strengthening U.S. Govt Critical Minerals Relationship

Bradda Head Lithium Ltd (AIM: BHLL), the North America‑focused lithium development company, is pleased to announce that its wholly owned U.S. subsidiary, Zenolith (USA) LLC, has been accepted as a member of the Defense Industrial Base Consortium (DIBC)-a U.S. initiative dedicated to strengthening national security through innovation, industrial collaboration, and resilient domestic supply chains.

·  Zenolith joins the Defense Industrial Base Consortium, a key U.S. industrial and national security platform.

·  Enhances Bradda Head's positioning within the U.S. critical minerals and battery materials supply chain, amid growing federal support for domestic mineral production.

·  Aligns the Company with U.S. Government priorities focused on securing reliable domestic sources of lithium and other strategic minerals.

· Creates opportunities for collaboration with industry leaders, technology developers, research institutions, and government stakeholders.

· Builds on Bradda's recent strategic initiatives, including its joint venture with Rio Tinto subsidiary Kennecott Exploration Company (KEX) and its MOU with battery‑technology company Tyfast.

· Reinforces the strategic value of Bradda's U.S. lithium portfolio as demand for domestically sourced battery materials accelerates across energy storage, electrification, and defense sectors.

Ian Stalker, Executive Chair, commented:

"We are pleased that we are now part the Defense Industrial Base Consortium. Membership strengthens Bradda's alignment with U.S. efforts to secure domestic critical mineral supply chains and reduce reliance on foreign sources of strategic materials, a philosophy that has always been at the core of Bradda's strategy.

Lithium is increasingly recognized as essential to energy storage, advanced manufacturing, and national security. With our expanding U.S. asset base, Bradda is well positioned to contribute to America's long‑term critical minerals objectives. We look forward to working with fellow DIBC members to support the development of a secure and resilient domestic supply chain."

Strategic Importance of DIBC Membership

The DIBC brings together companies, research institutions, technology developers, and government agencies to secure domestic supply chains and accelerate the development of technologies vital to U.S. national security. Through its membership, Zenolith will have the opportunity to:

·    contribute technical expertise,

·    participate in collaborative research and development initiatives,

·    engage with organizations shaping U.S. critical minerals policy and industrial strategy.

Bradda's participation reflects the growing strategic importance of domestically sourced lithium, a key component in advanced battery technologies supporting energy storage, electrification, defense systems, and emerging technologies central to U.S. economic and national security priorities.

Strengthening Bradda's U.S. Growth Strategy

Joining the DIBC follows Bradda's recently announced strategic exploration joint venture with Kennecott Exploration Company (KEX) at the Whistlejacket Lithium Project in Arizona, as well as its MOU with Tyfast, a U.S. battery‑technology developer. These initiatives collectively advance the Company's objective of building a leading U.S.‑focused lithium platform spanning critical mineral development and the broader domestic battery supply chain.

Bradda believes its portfolio of lithium assets across Arizona, Nevada, Pennsylvania, and Texas is well positioned to support ongoing federal initiatives aimed at strengthening domestic supply chains, reducing reliance on foreign sources of strategic materials, and supporting long‑term growth in the U.S. battery and defense sectors.

Looking Ahead

Bradda Head looks forward to working alongside fellow DIBC members to identify collaborative opportunities, share best practices, and contribute to the Consortium's mission of strengthening U.S. national security through industrial innovation and supply chain resilience.

For further information please visit the Company's website: www.braddaheadltd.com.

ENDS 

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About Bradda Head Lithium Ltd.

Bradda Head Lithium Ltd. is a North America-focused lithium development group. The Company currently has interests in a variety of projects, the most advanced of which are in Central and Western Arizona: The Basin Project (Basin East Project and Basin West Project) and the San Domingo Project.

The Basin East Project has a Measured Mineral Resource of 20 Mt at an average grade of 929 ppm Li for a total of 99 kt LCE and an Indicated Mineral Resource of 122 Mt at an average grade of 860 ppm Li and an Inferred Mineral Resource of 499 Mt at an average grade of 810 ppm Li for a total of 2.81 Mt LCE (https://www.accesswire.com/883697/bradda-head-lithium-ltd-announces-updated-mineral-resource-expansion-basin-project). A plan of operation was approved by BLM in 2025 for the Basin West area. Now company is working on an Environmental Assessment (EA) permit.

The San Domingo Project comprises 248 claims covering approximately 1850 acres, located primarily on BLM land, along with two Arizona State Land Department claims. To date, 108 drill holes totaling 13,089 m of core drilling have been completed across three drilling campaigns. The project area hosts more than 1,000 mapped pegmatites, of which 18 have been identified as priority targets, with six tested by drilling. The area currently holds two active Notices of Intent (NOI) permits, and updated drilling plans are in place that can be implemented once all required permits for the pegmatite targets are secured. The objective of the next exploration phase is to further delineate the most prospective areas and advance them toward potential Mineral Resource Estimation (MRE) and NI 43-101 compliant reporting.

The Whistlejacket Project comprises nine Arizona State Land Department Mineral Exploration Permits (MEPs), covering a total of 2,010.7 hectares. The project is subject to a definitive Option to Joint Venture agreement with Kennecott Exploration Company (KEX) and targets spodumene-bearing pegmatites. KEX previous Exploration include 19 drilled diamond drill holes totaling 4,188 meters, with all holes intersecting lithium mineralization. Notable results include 51.0 meters at 1.11% Li₂O in hole WSTL0009 and 19.47 meters at 1.66% Li₂O in hole WSTL0008. In addition, the project has benefited from extensive surface mapping, sampling, airborne geophysics, and the acquisition of high-resolution aerial imagery, significantly enhancing the geological understanding and overall value of the asset.

The Group intends to continue to develop its three phase one projects in Arizona, whilst endeavoring to unlock value at its other prospective pegmatite and brine assets in Arizona, Nevada, and Pennsylvania.

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