Sustainability Report 2021

FY21 WATER WITHDRAWAL & 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 - 902.68 902.68 Mine Seepage - 73.60 73.60 Ore Moisture - 18.13 18.13 Precipitation 136.47 - 136.47 Potable Deliveries 5.74 - 5.74 Total 142.21 994.41 1,136.62 FY21 WATER DISCHARGE DESTINATIONS & 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 licenced irrigation area 51.69 - 51.69 Total 51.69 - 51.69 FY21 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 - 1,077.42 1,077.42 Paste holdup 1 - 263.41 263.41 Evaporation & other losses 2 783.16 - 783.16 Water in concentrate 24.72 - 24.72 Deposited tailings holdup - 107.41 107.41 Total 807.88 1,448.24 2,256.12 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. FY21 TOTAL MATERIALS USED FY21 FY20 Non renewable Renewable Non renewable Renewable Explosives (tonnes) 1,069 - 1,047 - Cement (tonnes) 7,680 - 12,062 - Lubricants and oils (kilolitres) 1 240.7 - 236.7 - Diesel used (kilolitres) 23,335 - 23,272 - Electricity used (Megawatt hours) 84,152 9,371 86,217 9,067 Gas used (gigajoules) 288 - - - Water consumption (megalitres) - 2,256.1 - 2,110.8 1. Calculated from the Australian National Greenhouse and Energy Reporting (NGER) incidental summary and includes lubricating oil, non-lubricant fluid oils and grease. 104 —IGO SUSTAINABILITY REPORT 2021 Performance Data