Investor Presentaiton

• • • • • Lihir Seepage Barrier Feasibility Study Feasibility Study Status Ground investigation completed in FY19 Current alignment utilises Harbour Waste Platform and provides opportunity to access additional gold ounces Cut off wall construction using clam shell and hydromill Full scale construction field trials planned for H2 FY20 Completion of feasibility study and cost estimate Q1 FY21 New Seepage Barrier Alignment Near Shore Cut Off Wall Curre ment Cut Off Wall Sept 2018 Cu AAAAA SECTION 1:100 18107 SECTIONE 1.30 кото NOT FOR CONSTRUCTION DRAFT CHAPE Legend Near Shore Cut Off Wall (NSCO) Sept 2018 Cut Off Wall Current Alignment Cut Off Wall 0 100 200 300 m Construction Equipment for Cut off Wall Clam Shell Hydromill Cutter 23 23

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