Mandilla Gold Project

Astral's flagship free-milling open-pit gold development in the northern Widgiemooltha greenstone belt, ~70km south of Kalgoorlie, Western Australia, covered by granted Mining Leases (only the standard WA Government gold royalty). The project comprises the Theia, Iris, Eos and Hestia deposits; Theia is the cornerstone, with a >1.6km mineralised footprint of structurally controlled quartz-vein arrays and hydrothermal alteration along the western margin of the Emu Rocks Granite. Metallurgical testwork demonstrates high gravity-recoverable gold, fast leach kinetics and high overall recoveries at coarse grind. The April 2025 JORC 2012 MRE is 41.5Mt at 1.1g/t Au for 1.43Moz; the June 2025 PFS declared a maiden Probable Ore Reserve of 34.3Mt at 0.9g/t Au for ~1.0Moz and selected a 2.75Mtpa CIP plant as the optimum development route. Mandilla is one of the largest undeveloped free-milling open-pit gold development projects in the Kalgoorlie region.