INDEPENDENCE GROUP NL SUSTAINABILITY REPORT 2017

IGO PARAMETERS Parameter Value Unit INDEPENDENCE GROUP (COMBINED) Size of IGO Workforce 796 count INPUTS Labour 1,781,234 h Ore Mined 3,200,000 t Electricity 105,158 MWh Gas 521,795 GJ Diesel 17,692,448 L Ground Support 2,443 t Explosives 1,446 t Cement 5,775 t Grinding Media 1,286 t Water 2,719,686 kL Reagents – Copper Sulphate 410 t Lubricants and Oils 337,000 L EMISSIONS IGO Carbon Dioxide (Scope 1 and Scope 2) 162,183 CO 2 –e t IGO Scope 1 Emissions 148,440 CO 2 –e t IGO Scope 2 Emissions 13,743 CO 2 –e t Carbon Monoxide 245,616 kg Oxides of Nitrogen 547,803 kg Sulphur Dioxide 401 kg Volatile Organic Compounds 27,018 kg Particulate Matter (<10um) 766,606 kg Particulate Matter (<2um) 28,906 kg PRODUCTS Ni in Ore Delivered 8,433 t Cu in Ore Delivered 592 t Ni in Concentrate 3,502 t Cu in Concentrate 6,671 t Zn in Concentrate 32,638 t Ag in Concentrate 1,376,521 oz Au in Concentrate 2,532 oz Au in Bullion 129,487 oz REHABILITATION New rehabilitation 41 ha WASTE Tailings (wet) 2,736,390 t Waste Rock 1,050,059 t Materials to Landfill 2,019 t Parameter Value Unit TROPICANA GOLD MINE Life of Mine 7-10 years Tropicana Tenement Area 4,100 km 2 Total Cleared Area (FY17) 2,457 ha Ore Mined (IGO’s share) 2.7 Mt Waste Mined (IGO’s share) 22 Mt Ore Milled (IGO’s Share) 2.2 Mt IGOs Gold Share 129,487 oz Tropicana Tailings (IGO’s Share) 2.2 Mt CONSUMABLES Water Abstraction From Operational and Process Water Bores 6,960,000 kL LONG OPERATION Life of Mine <1 year Total Cleared Area 103 ha % FIFO Workforce 13 % Ore Mined 205,372 t CONSUMABLES Dewatering Volume to Surface 228,895 kL Water Discharge to Lake Lefroy 302,172 kL JAGUAR OPERATION Life of Mine 3-5 years Total Cleared Area 246 ha % FIFO Workforce 95 % Waste Mined 172,282 t Ore Mined 444,700 t CONSUMABLES Underground Dewatering 1,070,783 kL Water Discharged into Teutonic Bore Pit 393,992 kL NOVA OPERATION Life of Mine 9 years Total Cleared Area 439 ha Ore Mined 374,000 t % FIFO Workforce 88 % Tenement Area 6,059 ha IGO SUSTAINABILITY REPORT 2017— 93