INDEPENDENCE GROUP NL SUSTAINABILITY REPORT 2017

Emission 2016 2017 Units Change from FY16 Carbon dioxide*** 65,220 162,183 CO 2 -e t 96,963 Carbon monoxide 49,621 76,490 CO 2 -e t 26,869 Oxides of nitrogen 15,559 13,743 CO 2 -e t -1,816 Sulphur dioxide 140,132 245,616 kg 105,484 Volatile organic compounds 356,208 547,603 kg 191,395 Particular matter 10 262 401 kg 139 Particulate matter 2.5 22,572 27,018 kg 4,446 Waste 2016 2017 Units Change from FY16 Tailings (wet tonnes) 2,062,829 2,736,390 t 673,561 Waste rock 726,018 1,050,059 t 324,041 Materials to landfill 1,668 2,019 t 351 FIGURE 8 IGO INPUTS AND OUTPUTS Inputs 2016 2017 Units Change from FY16 Labour 1,540,290 1,781,234 hours 240,944 Ore mined* 725,089 3,220,000 t 2,494,911 Electricity 75,601 105,158 MWh 29,557 Gas 476,153 521,795 GJ 45,642 Diesel 9,228,808 17,692,448 L 8,463,640 Ground support (steel) 1,382 2,443 t 1,061 Explosives 1,338 1,446 t 108 Cement** 10,531 5,775 t -4,756 Grinding media 551 1,286 t 735 Water 1,918,122 2,719,686 kL 802,564 Reagents – copper sulphate 1,558 410 t -1,148 Lubricants and oils 314,124 337,000 L 22,876 Products 2016 2017 Units Change from FY16 Ni in ore delivered 8,493 8,433 t -60 Ni in concentrate 0 3,502 t 3,502 Cu in ore delivered 610 592 t -18 Cu in concentrate 7,412 6,671 t -741 Zn in concentrate 39,335 32,638 t -6,697 Ag in concentrate 1,603,565 1,376,521 oz -227,044 Au in concentrate 4,543 2,532 oz -2,011 Au in bullion 134,435 129,487 oz -4,948 NOTE These figures do not include inputs and outputs from Tropicana Gold Mine, with the exception of gold output which is included. Additional information on IGO’s emissions can be found on the National Pollutant Inventory website. * Figures for 2017 are inclusive of our 30% share of ore mined at the Tropicana Gold Mine. ** Cement use has significantly decreased as we are no longer using the cement aggregate fill plant at our Jaguar Operation. *** Carbon dioxide has significantly increased due to the inclusion of emissions from the Tropicana Gold Mine in 2017. INPUTS MINING & PROCESSING PRODUCTS WASTE & EMISSION REHABILITATION WATER | OIL | METALS RECYCLING IGO SUSTAINABILITY REPORT 2017— 29