Major JORC Resource & Reserve Upgrade at Orom-Cross

Blencowe Resources Plc (LSE: BRES) is pleased to announce the completion of the updated JORC 2012 Mineral Resource and Ore Reserve Statement (“JORC”) for its 100%-owned Orom-Cross Graphite Project in Uganda. This upgrade incorporates all the infill drilling undertaken in 2025 across the Camp Lode and Northern Syncline/Eastern Limb deposits and represents the final key technical input into the Company’s Definitive Feasibility Study (“DFS”), to be published shortly.

The updated JORC confirms a substantial increase in Ore Reserves and a meaningful uplift in Indicated Resources, further validating Orom-Cross as a large-scale, long-life, low-cost graphite project with significant future expansion potential. This upgrade comes at a strategically important time for the graphite sector as global demand for secure ex-China supply accelerates.

This update covers only infill drilling results from 39 holes at Camp Lode and Northern Syncline.

A further 192 step-out holes, drilled across the wider mining license area at the new Iyan and Beehive deposits, including the six deep drillholes (each of which terminated in graphite mineralisation at depths of ~100 metres), are yet to be incorporated. These results collectively demonstrate the broader system scale potential and are expected to support an additional JORC expansion post-DFS in 2026, providing a powerful growth runway for the Project.

JORC Resource & Reserve Statement (2025 Update)

Total JORC Ore Reserves (Proven + Probable):

• Proven Reserve: 1.29 Mt @ 5.13% TGC
• Probable Reserve: 21.78 Mt @ 5.18% TGC
• Total Ore Reserves: 23.08 Mt @ 5.18% TGC

This represents a significant uplift of 47% or 7.36Mt versus previous JORC Ore Reserve Estimate reported in 2022

Total JORC Mineral Resource (Measured + Indicated + Inferred at a 3.5%GC cut-off):

• Measured Resource: 1.20 Mt @ 5.13% TGC
• Indicated Resource: 16.40 Mt @ 5.70% TGC
• Inferred Resource: 8.50 Mt @ 5.41% TGC
• Total Resource: 26.10 Mt @ 5.58% TGC

This represents a 7% increase on previous JORC estimate, including a 33% (4.1Mt) in Indicated Resources. A detailed breakdown of Reserves and Resources by deposit (Camp Lode and Northern Syncline) is provided in the further below.

Key Results and Significance of the Upgrade

• 47% uplift in Ore Reserves – major de-risking milestone for DFS.
• 33% increase in Indicated Resources – improves early-life mine confidence and enhances project bankability.
• Strong geological continuity across both primary deposits, reaffirming Orom-Cross as a rare, large-scale, low-strip, shallow graphite system.
• High-quality metallurgical consistency fully aligned with prior test work, supporting both concentrate quality and downstream USPG processing.

Exceptional growth runway remains, with:

• 192 step-out holes (83% of full Stage 7 drill program) ready to be integrated into second major JORC upgrade post-DFS in 2026.
• Majority of remaining holes drilled across new Iyan and Beehive deposits.
• Geology at the new Iyan and Beehive deposits closely mirror Northern Syncline and…