Investor Presentaiton

Lihir Seepage Barrier Feasibility Study Infill Initial construction (FY21-23) • • Dredge landslide and marine sediments. from Inner Harbour Infill entrance to Inner Harbour Construct Cut off Wall through Harbour Waste Platform (HWP) Working Platform Cut Off Wall Second stage construction (FY24-25) • Dewater Inner Harbour and stabilise / remove remaining marine sediments. Relocate infrastructure onto HWP (roads, power, geothermal/water pipelines) Construct tsunami bund across HWP Pit Year 27 Inner Harbour Backfill Excavation Public Access Road Haul Road Infill Harbour Waste Platform- Rock Fill Cap Work Platform Backfill Tsunami Bund Wall 24

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