First Tin PLC announced that ongoing mineral processing testwork for the Definitive Feasibility Study (?DFS?) at its Taronga Tin Project (?Taronga?) in Australia continues to show improved recoveries. The project is owned by First Tin's 100% owned Australian subsidiary, Taronga Mines Pty Ltd. (?TMPL?). Results of the crushing testwork for the LG sample (0.10% Sn head grade) have shown that: Conventional crushing recovers 72.5% of tin into 46.5% of mass grading 0.16% Sn in the minus 2.8mm fraction.

Single pass vertical shaft impact (VSI) crushing of the plus 2.8mm fraction from the above conventional crushing, recovers an additional 11.7% of tin into 11.0% of the initial mass, grading 0.08% Sn, to the minus 2.8mm fraction. By combining the two minus 2.8mm fractions, a total of 84.2% of the initial tin is recovered to 57.5% of the initial mass with a grade increase from 0.10% Sn to 0.15% Sn. This is an improvement from the 82% recovery previously reported on 18 September 2023 for the HG sample (0.18% Sn).

The gravity concentration result for the bulk LG sample previously reported on 7 March 2024 was 71.5%. By combining the crushing and gravity concentration results, a total recovery can be calculated for the LG sample as Crushing: 84.2% recovery; Gravity concentration: 71.5% recovery; Combined: 60.2% recovery. This confirms recoveries are still good at head grades below the average grade being mined and therefore increases confidence in overall recoveries for the project.

Given these results, a second HG bulk sample has been collected (HG2, head grade 0.15% Sn) to be tested using the refined testwork flowsheet used for the LG sample. This includes classification prior to spiral concentration and improved locked cycle crushing and tabling. The crushing testwork of this sample has provided the following results to the minus 2.8mm fractions: Conventional crush: 66.8% of tin in 23.2% of mass grading 0.42% Sn; 1st Pass VSI: 24.3% of tin in 20.9% of mass grading 0.17% Sn.

Combining conventional and 1st pass VSI crushing results gives: 91.2% recovery of tin in 44.1% of mass grading 0.30% Sn. These are excellent results, significantly better than the 82% reported for the original HG sample and the 84.2% reported for the LG sample. If gravity concentration recoveries can be shown to be similar to those obtained for the LG samples (i.e., 71.5%), then total recovery at a head grade of 0.15% Sn should be around 65-66%.

This work will be reported as it is received.