5 May 2025-MSO Assessment of Mineral Resource

HIGHLIGHTS
• An assessment of the 2024 Mineral Resource shows the significance of the Wiluna multi-million ounce
Mineral Resource and the opportunity for the restart of hard rock mining.
• At a cut-off of 2.0g/t, the Mineable Shape Optimiser (MSO)© process estimated 11.2Mt @ 3.5 g/t for 1.26Moz
and 9.8Mt @ 3.5 g/t for 1.12Moz of in situ gold from Measured / Indicated and Inferred Resource Categories
respectively.
• Wiluna is now developing a detailed plan for the restart of hard rock mining to maximise the benefit of the
existing surface infrastructure and immediately accessible underground infrastructure.
• A quantitative assessment within a defined Study Area shows a ~200% conversion of Inferred Resource
Category material to Indicated Resource Category as a result of 394 additional drill holes.
• Within a defined Study Area and at a cut-off of 2.0g/t a 52% conversion of Mineral Resources to Mineable
Shape Optimiser (MSO)© MSO Shapes.
• Opportunity for a second underground mining operation based on the resources outside the Happy Jack,
Woodley and Burgundy mining areas.