HIGHLIGHTS
– Locksley produces 100% American Mojave antimony rod
– This achievement validates the only known U.S. mine-to-metal supply chain for antimony, completely independent of Chinese processing
– Ore sourced from the company’s Mojave Desert Antimony Mine in California and refined by Hazen Research Inc. in Colorado
– Milestone supports U.S. government initiatives to secure critical minerals essential for defense, energy and advanced manufacturing
– Locksley works closely with its strategic partners and Washington DC consultants, GreenMet, to advance permitting and financing initiatives
– Locksley is now advancing pilot-scale production to confirm scalability and targeting commercial supply to the US defense and industrial sectors
– Breakthrough coincides with Australian Prime Minister Albanese’s visit to Washington for meetings with President Trump, highlighting Australia’s growing role in strengthening US self-sufficiency in critical minerals
The milestone represents proof-of-concept for an all-U.S. mine-to-metal supply chain, from ore sourced from the company’s Mojave Desert Antimony Mine in California, to all-U.S. refining by Hazen Research Inc., one of the nation’s most respected metallurgical and process development laboratories.
This breakthrough directly supports U.S. government and presidential decisions aimed at restoring domestic production of critical minerals essential for defense, clean energy, and strategic manufacturing supply chains. Locksley is working closely with its strategic partners and GreenMet, the Washington DC-based advisors, to advance permitting and financing initiatives to support the next phase of the company’s commercialization strategy.
Kerrie Matthews, CEO of Locksley, commented:
“This is a decisive milestone for Locksley and the United States. The successful casting of the first 100% American antimony rod in decades demonstrates that mine-to-metal production is not only possible, but already underway.
We’ve proven the concept, and now our focus turns to scaling this achievement into a sustainable, commercial supply chain that supports America’s industrial and defense sectors. This is just the beginning, the groundwork has been laid and we look forward to keeping the market informed about the next steps for Locksley and its strategy to support American independence in critical minerals.”
Drew Horn, CEO of GreenMet, commented:
“Locksley’s achievement is not only a technical success, but also a national milestone. The ability to produce an American-sourced and refined antimony rod is exactly the kind of outcome that U.S. policymakers and industry leaders have been seeking to restore domestic supply chains for critical minerals.”
GreenMet is proud to support Locksley in advancing these efforts and to partner with the company as it moves forward to authorize and fund initiatives that strengthen America’s strategic independence in materials.”
Validating a 100% US mine-to-market supply chain
This achievement demonstrates Locksley’s commitment to providing an antimony product that is fully sourced and refined in the United States.
The breakthrough directly supports the U.S. government’s goals to restore domestic critical mineral production. Locksley will work closely with strategic partners, including Washington DC consultants and GreenMet, to advance permitting and financing to support the next phase of the company’s commercialization strategy and America’s self-sufficiency in critical minerals.
Towards pilot-scale production
Following the successful validation of the first 100% American-made antimony rod, Locksley Resources is now advancing toward pilot-scale production, a key step in confirming metallurgical recovery, process efficiency and scalability for future commercial delivery.
The company will work closely with industry partners and downstream consumers to ensure that product specifications for both antimony trisulfide and antimony trioxide meet stringent U.S. defense and industrial standards. This phase will also support offtake readiness and qualification as the leading U.S. developer of domestically produced antimony metal.
This milestone firmly establishes Locksley as a pioneer in rebuilding the U.S. antimony supply chain, in line with ongoing U.S. government and presidential orders prioritizing domestic sourcing and processing of critical minerals essential for defense, energy storage and advanced manufacturing.
With one of the few known high-grade, primary antimony deposits in the continental United States, the Mojave Project provides a path to scaled production and a strategic alternative to Chinese-controlled supply chains, cementing Locksley’s role at the forefront of America’s crucial mineral independence.
Strategic context: US and Australian government involvement
Locksley’s milestone coincides with a significant step forward in the bilateral dialogue on critical minerals between the United States and Australia, highlighted by Prime Minister Albanese’s upcoming meeting with President Trump in Washington, DC. Recent government briefings and financing initiatives from both countries have underscored the strategic importance of antimony and the shared goal of establishing secure, allied production capabilities.
As the first company to deliver a 100% American antimony rod in decades, Locksley’s achievement places the company at the forefront of this renewed trans-Pacific strategic effort to restore secure, allied supply chains for critical minerals vital to defense, energy and advanced manufacturing.
Next steps
With proof-of-concept successfully achieved, Locksley is now moving from validation to pilot scale and pre-commercial operations in the United States. The next phase of work will focus on scaling, refining and positioning the company for government and industry engagement:
– Scale-up to US-based pilot plant operations: Establish a domestic pilot facility to validate process efficiency, recovery and repeatability under commercial conditions.
– Detailed metallurgical interpretation and process flowchart optimization: Use test data from Hazen Research to refine processing parameters and finalize design inputs for larger-scale operations.
– Collaboration with U.S. government and industry partners: progress discussions on offtake qualification, financing support, and strategic collaboration under existing national interest and defense supply chain programs.
– Commercial Path Planning: Progress on engineering, permitting and financing in collaboration with Washington DC-based consultants GreenMet, as Locksley moves forward toward establishing a fully integrated, US-controlled antimony production and processing capability.
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About Locksley Resources Limited:
Locksley Resources Limited (ASX:LKY,OTC:LKYRF) (FRA:X5L) (OTCMKTS:LKYRF) is an ASX-listed explorer focused on critical minerals in the United States of America. The company is actively advancing exploration of two key assets: the Mojave project in California, targeting rare earth elements (REEs) and antimony. Locksley Resources aims to generate shareholder value through strategic exploration, discovery and development in this highly promising mineral region.
Mojave Project
Located in the Mojave Desert, California, the Mojave Project includes more than 250 claims spread across two contiguous prospect areas, the North Block/Northeast Block and the El Campo Prospect. The North Block is directly adjacent to MP Materials’ claims, while El Campo lies along the Mountain Pass Mine strike and is surrounded by MP Materials’ claims, highlighting the strong geological continuity and exploration potential of the project area.
In addition to rare earths, the Mojave Project is home to the historic “Desert Antimony Mine,” which last operated in 1937. Although the United States currently has no domestic antimony production, demand for the metal remains high due to its essential role in defense systems, semiconductors, and metal alloys. With significant surface sampling results, the Desert Mine prospect represents one of the highest known antimony occurrences in the US
Locksley’s North American position is further strengthened by the increasing geopolitical urgency to diversify supply chains away from China, the global leader in both REE and antimony production. With the first drilling program now planned, the Mojave project is uniquely positioned to align with U.S. strategic objectives around critical mineral independence and economic security.
Tottenham project
Locksley’s Australian portfolio includes the advanced Tottenham Copper-Gold Project in New South Wales, targeting VMS-style mineralization
Source:
Locksley Resources Limited
Contact:
Kerrie Matthews
General manager
Locksley Resources Limited
T: +61 8 9481 0389
Kerrie@locksleyresources.com.au
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