How Locksley Resources Is Reviving US Antimony Supply with New Tech and Expansion

Strategic Partnerships and Technological Innovation

During the September 2025 quarter, Locksley Resources Limited (ASX – LKY) accelerated its ambitions to re-establish a domestic US supply chain for critical antimony and rare earth elements. Central to this effort is a collaboration with Rice University focused on the DeepSolv™ technology, a green hydrometallurgical extraction process designed to offer a low-carbon, scalable alternative to traditional smelting. This partnership aims to develop proprietary intellectual property that could underpin future US refining capabilities, a critical step given the strategic importance of antimony in defence and energy storage applications.

Alongside this, research into antimony-based battery materials positions Locksley at the forefront of emerging clean energy technologies, potentially capturing downstream value beyond raw mineral extraction.

Operational Milestones at Mojave Project

Locksley’s Mojave Project in California, adjacent to the Mountain Pass rare earths mine, saw substantial progress. The Bureau of Land Management (BLM) issued a drilling permit for the Desert Antimony Mine (DAM), allowing an expanded program of approximately 2,180 metres across 13 reverse circulation holes. Geological mapping refined high-priority drill targets, including new shear corridors and rare earth element structures at the El Campo prospect.

The company also significantly expanded its land position by staking an additional 249 claims, bringing the total contiguous holding to over 40 square kilometres. This strategic footprint directly adjoins MP Materials’ Mountain Pass district, enhancing the project’s exploration potential and alignment with US critical minerals supply chain objectives.

Corporate Developments and Capital Raising

To support its ambitious mine-to-market strategy, Locksley strengthened its leadership team with key appointments, including Pat Burke as Non-Executive Chairman, Kerrie Matthews as CEO, and Danny George as COO. The company also completed an oversubscribed placement raising A$5.3 million, backed by cornerstone investor Tribeca, boosting its cash reserves to over A$7.2 million. This capital injection is earmarked for drilling programs and advancing downstream technology development.

Further corporate milestones include a listing on the Frankfurt Stock Exchange to broaden European investor access and active engagement with US government agencies such as the Department of War and EXIM Bank. These efforts aim to secure non-dilutive funding under the Defense Production Act and Inflation Reduction Act, critical for advancing domestic critical mineral projects.

Reviving Domestic Antimony Production

Perhaps the most tangible demonstration of progress came after the quarter’s end, when Locksley successfully cast the first 100% American-made antimony ingot in decades. Produced entirely on US soil from non-Chinese feedstock, this milestone validates the company’s integrated mine-to-metal approach and signals a potential renaissance in domestic antimony refining. Given antimony’s essential role in defence systems, semiconductors, and advanced battery technologies, this breakthrough could have far-reaching implications for US supply chain resilience.

Outlook and Strategic Focus

While exploration at the Tottenham copper-gold project in New South Wales was limited this quarter, Locksley’s primary focus remains on advancing the Mojave Project and downstream processing capabilities. Upcoming drilling results and metallurgical testwork will be critical in validating resource potential and refining processing pathways. The company’s strategic alignment with US government initiatives positions it well to capitalize on rising geopolitical imperatives to diversify away from Chinese dominance in critical minerals.