Aim-listed Rome Resources has received final assay results from its recent drilling campaign at the Kalayi deposit within the Bisie North Project, in the Democratic Republic of Congo (DRC).

These assay results complete the latest drilling programme and will now be incorporated into an updated mineral resource estimate (MRE), targeted for July.

The current Kalayi MRE, announced in November 2025, comprises an inferred mineral resource of 330 000 t grading 1.36% tin. Rome Resources says the updated MRE is expected to quantify the impact of the latest drilling campaign on that resource.

The company explains that the objective of the drilling programme was to improve geological continuity and increase contained tin within the Kalayi resource through wider mineralised intercepts. 

The wider mineralised zones encountered during the programme are expected to strengthen the geological model and is expected to provide a solid foundation for the updated MRE.

Rome Resources says the latest drilling has continued to demonstrate broader zones of mineralisation than previous Kalayi campaigns, while maintaining high-grade tin intervals within those wider intercepts.

Standout drill intercepts with grades of mineralisation (weighted by sample length) and depths tested include KBDD025 at 9.5 m at 2.05% tin from 60.0m, including 6 m at 3.12% tin including 3 m at 5.66% tin; KBDD033at 19.5 m at 0.52% tin from 144 m, including 1 m at 3.23% tin and 1 m at 2.87% tin; KBDD034 at 5 m at 1.88% tin from 225 m, including 1.5 m at 4.77% tin; and KBDD029 at 6.5 m at 0.97% tin from 220 m, including 1.5 m at 3.24% tin.

The length-weighted average grade of mineralisation for all samples analysed in this campaign above a cutoff of 0.5% tin is 2.41% (65 samples).  Rome Resources says this potentially puts the Kalayi deposit in the same league as a handful of global tin projects with an average grade of over 2%.

Drillholes KBDD025, KBDD027 and KBDD033 demonstrate this trend by returning tin intercepts of 9.5 m at 2.05%, 3.5 m at 2.92% and 19.5 m at 0.52%, respectively.

The company says its management believes these results will materially strengthen the geological model and expects that the updated MRE, targeted for July, will demonstrate a meaningful increase in contained tin compared with the November 2025 maiden MRE.

The results are subject to MSA Group’s review.

Alongside completion of the assay programme, Rome Resources notes that it continues to advance a number of parallel workstreams across Bisie North.

The company says the pilot tin mining project continues to progress and is expected to support conversion of the current small-scale exploitation permit into a full mining licence, while also providing valuable geological, metallurgical and processing information ahead of potential future development.

Processing of the recently completed airborne geophysical survey data is also progressing, with the results expected to improve the company's understanding of the wider Bisie mineralised system.

This will help identify and prioritise additional exploration targets across the licence package.

"We are delighted to now have received the final assays from the latest Kalayi drilling campaign, which now enables us to progress the updated tin MRE for Kalayi targeted for in or around July,” says Rome Resources CEO Paul Barrett.

He says the latest programme has continued to demonstrate wider mineralised zones than previous campaigns while maintaining high-grade tin intervals.

“While we progress to an updated Kalayi MRE, a number of important workstreams continue in parallel, including interpreting the airborne geophysical survey, acquired to assess further potential on the licences, the pilot tin mining scheme supporting our transition to a full mining licence and exploration fieldwork at the New Brunswick critical minerals project, in eastern Canada – which Rome Resources currently has an option over.

“Together, these initiatives continue to advance Kalayi towards development while providing multiple opportunities to further enhance shareholder value as we move through the second half of 2026,” says Barrett.