Cornish Metals Provides an Update for the South Crofty Tin Project

Metallurgical Drill Programme Complete
Favourable Ore Sorting Results
Feasibility Study Advancing

VANCOUVER, British Columbia, Oct. 09, 2023 (GLOBE NEWSWIRE) -- Cornish Metals Inc. (AIM/TSX-V: CUSN) (“Cornish Metals” or the “Company”), a mineral exploration and development company focused on its South Crofty Tin Project (“South Crofty” or the “Project”) in Cornwall, United Kingdom, is pleased to provide an update on the progress of activities at South Crofty. The Feasibility Study is advancing on schedule with a substantial amount of the study completed.

Richard Williams, CEO and Director of Cornish Metals, stated: “We expected the mineralisation at South Crofty to respond well to X-Ray Transmission (“XRT”) ore sorting, but these results exceed even our most optimistic expectations. XRT ore sorting has proven highly effective at preconcentrating mineralisation sampled from five different zones of the South Crofty deposit. We expect this result will have a positive effect on the project economics, allowing for lower power consumption and a smaller process plant and therefore lower capital and operating costs.

“In addition, good progress is being made on the Feasibility Study as project activities continue at pace at South Crofty.”

Metallurgical Testwork – Excellent Ore Sorting Results

• Both XRT ore sorting and Heavy Liquid Separation (“HLS”) pre-concentration testwork completed with excellent results:
  • XRT: 55% mass rejection and <3% metal loss (-50mm – +15mm size fraction);
  • HLS: 50% mass rejection and <5% metal loss (-15mm – +0.85mm size fraction);
• XRT ore sorter testwork of bulk composite samples completed by TOMRA Sorting GmbH (see photos here and here);
• HLS testwork of bulk composite samples completed by Wardell Armstrong International;
• The metallurgical testwork was conducted on samples from the 2023 metallurgical drill programme across five mineralised zones (No. 4 Lode, No. 8 Lode, Roskear B/D Lodes, North Pool Zone and Dolcoath South), representing the majority of the potential production areas in the first six years of the proposed mine life;
• The testwork results confirm the upgrading potential of South Crofty mineralisation and enables continuation of the process design optimisation work to reduce the size of the mineral processing plant and materially lower capital costs, operating costs and environmental footprint.