Wuudagu B’s Closer Location Could Reshape VBX’s Mine Plan Risks

Consistent Assay Results Reinforce Wuudagu B Potential

VBX Limited (ASX – VBX) has announced the receipt of all assay results from its 2025 infill drilling program at the Wuudagu B bauxite deposit in northern Western Australia. The comprehensive program, comprising 128 drill holes, has confirmed the continuity and quality of the deposit, aligning closely with the 2016 inferred mineral resource estimate of 16.1 million tonnes grading 39.3% alumina (Al2O3) and 13.2% silica (SiO2).

These results are significant as they underpin the company’s efforts to upgrade the confidence level of the Wuudagu B resource, which is currently classified as inferred. VBX is now preparing updated resource models that will support the inclusion of Wuudagu B in the mine planning for the upcoming definitive feasibility study (DFS) of the Wuudagu project.

Strategic Location Offers Operational Advantages

Wuudagu B’s location approximately 10 kilometres closer to the proposed barge loading facility at Guy Point presents a notable logistical advantage. This proximity could reduce haul road construction and operating costs compared to the previously planned development of the Wuudagu C deposit, which was the focus of the 2025 pre-feasibility study.

Such operational efficiencies are critical in the competitive bauxite market, especially as VBX positions itself as a responsible, near-term producer of high-quality, low-silica Australian bauxite. The company’s approach includes industry-standard beneficiation methods that enhance product quality beyond the in-situ assay grades reported.

Robust Drilling and Assay Methodologies

The drilling program employed aircore techniques on a 75m by 150m grid, with vertical holes averaging 6.4 metres in depth. Sampling and assay procedures adhered to rigorous industry standards, with quality control measures including standards, duplicates, and laboratory repeats. The assays were conducted by Nagrom in Perth using fused bead XRF and thermo-gravimetric analysis, ensuring reliable oxide and loss on ignition determinations.

VBX’s geological team supervised sample collection and recovery, ensuring representativity and data integrity. The company also emphasized its commitment to responsible exploration on Wunambal Gaambera country, maintaining strong relationships with Traditional Owners and local communities.

Looking Ahead – Resource Upgrade and DFS Integration

With assay results now fully received, VBX is focused on finalizing updated resource models for Wuudagu B. This step is pivotal for the DFS, which will evaluate the economic viability of mining Wuudagu B alongside other deposits. The potential to commence mining at Wuudagu B earlier than previously planned could accelerate project timelines and improve project economics.

Investors and industry observers will be watching closely for the release of the updated resource estimate and DFS outcomes, which will provide greater clarity on the scale and timing of production from this strategically located deposit.