Cornish Metals completes first drillhole in Roskear exploration programme
South Crofty project progresses as new drilling targets are set
Last updated 1st Jun 2026
Cornish Metals plc has successfully completed the first drillhole in its surface diamond drilling programme in the Roskear area of the South Crofty tin project, Cornwall, marking a significant step in the company's exploration efforts.
Drillhole SDD26_001A reached a final depth of 1,199.1 metres and intersected multiple mineralised structures, including zones of quartz-tourmaline veining with visible cassiterite and sulphide mineralisation consistent with the targeted mineralised system.
The current drilling programme encompasses approximately 2,400 metres aimed at exploring extensions to known mineralisation and evaluating priority exploration targets identified through historic drilling and recent geological interpretations.
Key highlights include:
- Completion of drillhole SDD26_001A to a depth of 1,199.1 metres
- Intersection of multiple target mineralised structures, including those hosting existing Mineral Resources
- Mineralised structures intercepted west of the current Mineral Resource estimate envelopes, hinting at potential resource growth opportunities
The programme is at its halfway point, with the second drillhole, SDD26_002, set to commence targeting the same structures approximately 100 metres west of SDD26_001A. Samples from SDD26_001A are being prepared for shipment to ALS Laboratories in Loughrea, Ireland, with assay results anticipated later this month.
CEO Don Turvey commented on the progress: "The completion of drillhole SDD26_001A marks an important milestone in this targeted exploration drilling programme at South Crofty. The drillhole has successfully intersected multiple projected mineralised structures, including extensions to known resource areas beyond the current Mineral Resource estimate envelopes."
"While assay results are still pending, the visual indications of mineralisation encountered are encouraging and support our geological interpretation of continued mineralisation to the west of the existing Mineral Resource areas. This programme is designed not only to assess opportunities for future Mineral Resource growth but also to sterilise key infrastructure areas incorporated within the current mine design."
Cornish Metals is advancing the South Crofty project, which aims to become a significant producer of tin, considered a critical mineral due to its use in electronic devices and electrical infrastructure. The mine benefits from existing infrastructure and local support, with plans to produce approximately 4,700 tonnes of tin-in-concentrate annually over an initial 14-year mine life.