Bravo Mining Reports Metallurgical Improvements from Jameson Cell Testing

• Jameson Cell testing achieved 5-10% higher PGM recovery and 5-30% improvement in nickel recovery versus conventional flotation cells
• Mass pull reduced by up to 50% at comparable recovery points, suggesting potential for higher concentrate grades
• Technology has been deployed at over 500 installations globally, including nine PGM operations
• Results to be integrated into ongoing Pre-Feasibility Study for the Luanga Project
• Testing continues across additional mineralised zones and circuit configurations

Bravo Mining Corp. (TSXV: BRVO) is a Canada-based mineral exploration and development company developing its wholly owned Luanga Project, a palladium-platinum-rhodium-gold-nickel deposit in the Carajás Mineral Province of Pará State, Brazil. The company's technical team comprises local and international geologists with experience in PGM, nickel and copper discoveries in the region. The Luanga Project is located in an established mining area with access to infrastructure including road, rail and hydroelectric power.

Jameson Cell Flotation Test Results and Performance Improvements

Following completion of its Preliminary Economic Assessment in July 2025, Bravo Mining initiated metallurgical testing using Jameson Cell technology to address fine-grained mineralisation losses. The laboratory-scale testing was conducted at Base Metal Laboratories in Kamloops, British Columbia, using a Jameson L150 cell on North Zone samples with PGM grades ranging from 1.97 to 2.80 grams per tonne.

The test programme compared Jameson Cell performance against conventional flotation cells using baseline parameters. Results showed PGM recoveries increased by 5-10% for platinum, palladium and gold, whilst nickel recoveries improved by 5-30% across the recovery-mass pull curve. These improvements were achieved using standard sulphide reagent suites whilst controlling air entrainment, feed density and froth washing parameters.

The testing also demonstrated a 50% reduction in mass pull at similar recovery assessment points compared to conventional cells. Mass pull represents the percentage of feed material reporting to final concentrate. Lower mass pull at equivalent recovery rates indicates the production of higher-grade concentrates from the same feed material.

Enhanced Metal Recovery and Concentrate Grade Optimisation

The improved performance is attributed to enhanced contact between air bubbles and minerals within the Jameson Cell environment. This mechanism is particularly effective for recovering fine-grained mineralisation, which mineralogical studies have identified as a component of the Luanga deposit.

Reduced mass pull with maintained or improved recoveries has implications for concentrate handling. Lower concentrate tonnages containing the same payable metal content can affect transportation costs and concentrate payability terms.

Chairman and CEO Luis Azevedo stated:

"Incremental recovery improvements at higher concentrate grades would be beneficial for potential future flotation plant economics, downstream processing efficiencies, and the economics of shipping and selling a PGM concentrate."

The nickel recovery improvements add to the polymetallic nature of the Luanga concentrate.

Chairman and CEO Luis Azevedo noted:

"While still early-stage, these outcomes support continued evaluation of the Jameson Cell technology to a level of confidence acceptable for future studies and, if proven feasible, could improve concentrate grade, and reduce the CAPEX and OPEX associated with the flotation plant."

Integration into Pre-Feasibility Study Development Programme

Jameson Cell technology has been deployed at more than 500 installations globally since 1989, across commodities including copper, coal, gold, nickel, zinc and platinum group metals. Nine units have been installed in PGM concentrators. Recent implementations in southern Africa include Valterra Platinum's Mogalakwena Mine and Ivanhoe Mines' Platreef Mine.

Valterra reported a 23% reduction in mass pull and an improvement in concentrate grade from 60 to 78 grams per tonne at its Mogalakwena North Concentrator following Jameson Cell implementation. Other installations include Hudbay's New Britannia Concentrator, which replaced 11 conventional flotation cells with four Jameson Cells, reducing plant footprint by 50%.

The technology features direct 1:1 scale-up from laboratory cells to commercial installations. This characteristic means laboratory performance results are considered representative of industrial-scale applications. The company states that Jameson Cell results are accepted as sufficiently reliable for inclusion in Pre-Feasibility Study and Feasibility Study work.

Conclusion

Bravo Mining will continue metallurgical testing to validate Jameson Cell performance across different circuit configurations. The programme includes additional rougher trials, cleaner circuit testing, and locked-cycle testing of various configurations. Samples from the Luanga Central and Southwest Sectors will be tested to assess performance consistency across the deposit. Results from this programme are expected to contribute to the ongoing Pre-Feasibility Study.

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