Rome Resources Reports Strong Tin Results at DRC’s Kalayi Deposit Ahead of Updated Resource Estimate

Rome Resources Completes Kalayi Tin Drilling in DR Congo as Updated Resource Estimate Targets Growth

AIM-listed Rome Resources has received final assay results from its latest drilling campaign at the Kalayi deposit, part of the Bisie North Project in the Democratic Republic of Congo (DRC), paving the way for an updated mineral resource estimate (MRE) expected in July.

The results complete the company’s recent drilling programme, which was designed to improve understanding of the deposit’s geology, confirm mineral continuity and increase confidence in the estimated tin resources.

The current Kalayi resource estimate, announced in November 2025, contains an inferred mineral resource of 330,000 tonnes grading 1.36% tin.

Rome Resources said the updated MRE will assess how the latest drilling has affected the size and grade of the resource.

The company reported that recent drilling identified wider zones of tin mineralisation while maintaining higher-grade intervals within those areas.

Key drill results included:

• KBDD025: 9.5 metres at 2.05% tin from 60 metres, including 6 metres at 3.12% tin and 3 metres at 5.66% tin.
• KBDD033: 19.5 metres at 0.52% tin from 144 metres, including higher-grade intervals of 3.23% and 2.87% tin.
• KBDD034: 5 metres at 1.88% tin from 225 metres, including 1.5 metres at 4.77% tin.
• KBDD029: 6.5 metres at 0.97% tin from 220 metres, including 1.5 metres at 3.24% tin.

Rome Resources said samples analysed above a 0.5% tin cutoff returned a length-weighted average grade of 2.41% tin across 65 samples, highlighting the potential quality of the mineralisation identified during the campaign.

The company expects the updated resource estimate, subject to review by MSA Group, to provide a clearer picture of Kalayi’s contained tin potential.

Development Activities Continue at Bisie North

Alongside the drilling programme, Rome Resources is advancing several workstreams across the Bisie North project area.

The company’s pilot tin mining project is progressing and is expected to support the planned transition from a small-scale exploitation permit to a full mining licence.

The pilot operation is also intended to provide additional geological, metallurgical and processing data for future development planning.

Rome Resources is also processing data from a recently completed airborne geophysical survey, which is expected to help identify additional exploration targets across the wider licence area.

CEO Paul Barrett said the latest drilling results reinforce the potential of the Kalayi deposit, while ongoing exploration and development activities continue to advance the project.

The company said it will continue evaluating opportunities to expand resources and move the Bisie North project closer to potential future production.