IGO SUSTAINABILITY REPORT 2020

FY20 Water discharge destinations and outputs at the Nova Operation (megalitres) FRESHWATER (≤1,000 mg/L TOTAL DISSOLVED SOLIDS) OTHER WATER (>1,000 mg/L TOTAL DISSOLVED SOLIDS) TOTAL Water to licensed irrigation area 43.11 0 43.11 Total 43.11 0 43.11 FY20 Water consumption at the Nova Operation (megalitres) FRESHWATER (≤1,000 mg/L TOTAL DISSOLVED SOLIDS) OTHER WATER (>1,000 mg/L TOTAL DISSOLVED SOLIDS) TOTAL Decant water recycled 0 877.90 877.90 Paste holdup 1 0 198.70 198.70 Evaporation and other losses 2 866.40 0 866.40 Water in concentrate 25.91 0 25.91 Deposited tailings holdup 0 141.91 141.91 Total 892.31 1,218.51 2,110.82 1. Includes water used in the production of underground paste. 2. Includes evaporation from the tailings storage facility and decant ponds and water used for dust suppression. Total materials used FY20 FY19 NON RENEWABLE RENEWABLE NON RENEWABLE RENEWABLE Explosives (tonnes) 1,047 0 1,162 0 Cement (tonnes) 12,062 0 12,692 0 Processing Reagents (tonnes) 9,201 0 5,204 0 Lubricants and oils (kilolitres) 1 236.73 0 280.72 0 Diesel used (kilolitres) 23,272 0 27,236 0 Electricity used (megawatt hours) 86,217 9,067 89,700 0 Gas used (gigajoules) 0 0 0 0 Total water consumption (megalitres) 0 2,110.82 0 1,733.40 1. Calculated from the Australian National Greenhouse and Energy Reporting (NGER) incidental summary and includes lubricating oil, non-lubricant fluid oils and grease. 98 — IGO SUSTAINABILITY REPORT 2020 IGO SUSTAINABILITY REPORT 2020— 99 PERFORMANCE DATA Sources of total greenhouse gas emissions (tonnes CO 2 equivalent) FY20 FY19 Diesel combusted 63,067 73,808 SWIS electricity sources 173 130 Lubricating oil and grease 111 111 Unleaded gasoline 0 43 SF6 stock 1 1 Total 63,352 74,093 Greenhouse gas emissions by operation (tonnes CO 2 equivalent) FY20 FY19 SCOPE 1 SCOPE 2 TOTAL SCOPE 1 SCOPE 2 TOTAL Nova Operation 62,949 N/A 1 62,949 70,985 N/A 1 70,985 Exploration activities 230 50 280 2,978 22 3,000 Corporate office N/A 2 123 123 N/A 2 108 108 Total 63,179 173 63,352 73,963 130 74,093 1. There were no Scope 2 emissions generated from the Nova Operation in FY20 or FY19. 2. There were no Scope 1 emissions generated from the corporate office in FY20 or FY19. Land disturbance and rehabilitation (hectares) NOVA OPERATION EXPLORATION ACTIVITIES TOTAL Land disturbed and not yet rehabilitated 103.70 887.91 991.61 Land newly disturbed during FY20 0.87 121.58 122.45 Newly rehabilitated land during FY20 15.43 561.22 576.65 Total rehabilitation activities (hectares) 1 89.14 448.27 537.41 1. Total rehabilitation activities is the calculation of land disturbed and not yet rehabilitated plus land newly disturbed during FY20 minus newly rehabilitated land during FY20. FY20 Water withdrawal and inputs by source at Nova Operation (megalitres) FRESHWATER (≤1,000 mg/L TOTAL DISSOLVED SOLIDS) OTHER WATER (>1,000 mg/L TOTAL DISSOLVED SOLIDS) TOTAL Groundwater from production bores 0 1,043.12 1,043.12 Mine seepage 0 218.81 218.81 Ore moisture 0 14.52 14.52 Precipitation 55.99 0 55.99 Total 55.99 1,276.45 1,332.44