Cornish Tin & Lithium (CTL), formerly Cornish Tin Limited, a company focused on the discovery and development of high-grade tin and hard-rock lithium resources in Cornwall, has announced significant results from its Phase 3 exploration drilling programme at the Tregonning project, alongside the launch of its new corporate identity.
CTL’s Phase 3 exploration drilling programme, which was conducted between September 2025 and January this year, was primarily designed to target lithium-enriched aplite-pegmatite sheets in the newly identified Tregonning South extension area. Drilling has also intercepted an extensive new tin system, as well as very successful lithium results.
The drilling confirmed that a newly identified lithium-bearing rock formation, called the Newall Formation, continues far beyond the area where it was first discovered at Tregonning North. Earlier drilling there found high lithium concentrations, including an interval of 0.3 m grading 1.33% lithium oxide, with peak grade of 1.42% lithium oxide.
The Phase 3 results show that this lithium-bearing system extends for about 3.27 km from Tregonning North to Tregonning South. Drilling also found several lithium-bearing layers at different depths across the area, suggesting the project may contain a larger lithium resource than previously thought.
Phase 3 drilling also intercepted a new tin mineralisation system across Tregonning South, including ten tin lodes identified to date and an associated sheeted vein system, highlighting the project’s growing potential as a significant source of both lithium and tin.
CTL encountered high-grade tin mineralisation across multiple lodes, including up to 2.69% tin in Norcross No.1 Lode, 1.26% tin in Rib North Lode and 1.68% tin in Rib South Lode.
Together, these discoveries further strengthen Cornwall‘s position as a strategically important source of critical minerals essential to the UK’s energy transition, industrial resilience and long-term supply chain security.
To coincide with these successful exploration results, the company also announced its new name, Cornish Tin & Lithium, to reflect its strategic evolution and expanding focus on critical minerals essential to the global energy transition. “The name change underscores the company’s dual-commodity focus and its potential to be a leading domestic source of responsibly produced tin and lithium, both vital for technologies such as electric vehicles, renewable-energy systems, and advanced electronics,” says CEO and founder Sally Norcross-Webb.
“Building on the success of our previous drilling programmes at Wheal Vor and Tregonning North, the results of Phase 3 at Tregonning South are also excellent. Never before explored systematically, Tregonning South clearly has spectacular potential. As a combined mining operation, our project areas in West Cornwall could make a very significant and positive contribution to Cornwall’s economy and the critical minerals resilience of the UK and Europe,” she concludes.