19 May, 2025

Bradda Head Lithium Ltd

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

SEG Publication on the

Geology, Geochemistry, and Potential Origins of the Basin Volcano-Sedimentary Lithium Deposit

Bradda Head Lithium Ltd (AIM:BHL), the North America-focused lithium development group focused on developing US lithium for the US market, is proud to announce the Society of Economic Geologists ("SEG") publication by members of the Arizona Geological Survey in collaboration with Bradda Head on the article titled: Geology, Geochemistry, and Potential Origins of the Basin Volcano-Sedimentary Lithium Deposit, Kaiser Spring Volcanic Field, Northwestern Arizona, U.S.A. This article joins a broader initiative focused on global lithium deposits and forms one of two forthcoming compendiums to be published by the SEG.

Ian Stalker, Executive Chair, commented:

"This distinguished SEG publication is the culmination of a long-term collaboration between Bradda Head, the Arizona Geological Survey and the University of Arizona, and speaks directly to the mutually beneficial relationships Bradda has built across academia and governmental agencies in areas in which it operates. We are delighted to see the final product of this important research, highlighting the significance of Bradda's work for purposes beyond our immediate imperative and advantageous for those local to our operations. We look forward to continuing these relationships and lending our insight to develop a truly exceptional understanding of the geology and origin of lithium at our Basin project, as it relates to clay deposits."

Bradda Head's Chief Operations Officer, Joey Wilkins, and Bradda Head's geologist, Brendan Fenerty, spearheaded the Company's contribution to this publication. Bradda Head commends the authors, Lisa Anne Thompson, Carson A. Richardson, and Brian F. Gootee of the Arizona Geological Survey, for this insightful and valuable research.

The full research article is available here:

https://pubs.geoscienceworld.org/segweb/economicgeology/article/doi/10.5382/econgeo.5138/654074/Geology-Geochemistry-and-Potential-Origins-of-the

About the article

Very little was known about the basin geometry and origin of lithium in which sedimentary rocks deposited, until new geologic mapping and results from Bradda's recent drilling programmes revealed sedimentological and stratigraphic evidence for a buried Miocene-aged maar crater filled with lithium-rich clay, pyroclastic rocks, and basalt flows. This facilitated the necessary data for a framework geologic study of the Basin stratigraphic architecture, the sedimentology and geochemistry of the Li-rich clay deposits within, and evidence for maar crater basin geometry. In the research article, existing and new surface and drill core geochemical data and borehole sedimentological logs have been integrated with geologic mapping to characterize the Basin stratigraphic package.

Bradda's COO Joey Wilkins has been engaged on this research project since early 2024, highlighting Bradda's collaborative approach to geological research and the valued geological expertise present in the Bradda Head team.

Qualified Person (Bradda Head)

Joey Wilkins, B.Sc., P.Geo., is Chief Operating Officer at Bradda Head and the Qualified Person who reviewed and approved the technical disclosures in this news release. Mr Wilkins is a graduate of the University of Arizona with a B.Sc. in Geology with more than 39 years of experience in mineral exploration and is a qualified person under the AIM Rules and a Qualified Person as defined under NI-43-101. Mr Wilkins consents to the inclusion of the technical information in this release and context in which it appears.

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

ENDS

 Contact:

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 the Basin West Project) and the Wikieup 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. The Group intends to continue to develop its three phase one projects in Arizona, whilst endeavouring to unlock value at its other prospective pegmatite and brine assets in Arizona, Nevada, and Pennsylvania. All of Bradda Head's licences are held on a 100% equity basis and are in close proximity to the required infrastructure. Bradda Head is quoted on the AIM of the London Stock Exchange with the ticker of BHL.

This is a Reach announcement. Reach is an investor communication service aimed at assisting listed and unlisted (including AIM quoted) companies to distribute media only / non-regulatory news releases into the public domain. Information required to be notified under the AIM Rules for Companies, Market Abuse Regulation or other regulation would be disseminated as an RNS regulatory announcement and not on Reach.