IGO Interactive Annual Report 2018

NOVA OPERATION — MINERAL RESOURCES Source JORC Code Class 30 June 2017 30 June 2018 Mass Nickel Copper Cobalt Mass Nickel Copper Cobalt (Mt) (%) (kt) (%) (kt) (%) (kt) (Mt) (%) (kt) (%) (kt) (%) (kt) Underground Measured 5.2 2.63 137 1.10 57 0.08 4 11.9 2.15 256 0.88 104 0.07 9 Indicated 4.5 2.50 112 1.02 45 0.09 4 1.1 0.88 10 0.39 4 0.04 0.4 Inferred 1.7 1.3 22 0.6 10 0.05 1 0.1 0.6 0.4 0.2 0.1 0.02 0.02 Subtotal 11.4 2.4 271 1.0 113 0.08 9 13.0 2.0 266 0.8 109 0.07 9 Stockpiles Measured - - - - - - - 0.1 1.66 2 0.68 1 0.07 0.1 Total Measured 5.2 2.63 137 1.10 57 0.08 4 12.0 2.15 258 0.87 105 0.07 9 Indicated 4.5 2.50 112 1.02 45 0.09 4 1.1 0.88 10 0.39 4 0.04 0.4 Inferred 1.7 1.3 22 0.6 10 0.05 1 0.1 0.6 0.4 0.2 0.1 0.02 0.02 Nova Operation Total 11.4 2.4 271 1.0 113 0.08 9 13.1 2.0 268 0.8 109 0.07 9 NOVA OPERATION — ORE RESERVES Source JORC Code Class 30 June 2017 30 June 2018 Mass Nickel Copper Cobalt Mass Nickel Copper Cobalt (Mt) (%) (kt) (%) (kt) (%) (kt) (Mt) (%) (kt) (%) (kt) (%) (kt) Underground Proved - - - - - - - 10.2 1.93 197 0.79 80 0.07 7 Probable 13.3 2.06 274 0.83 110 0.07 9 1.3 1.34 18 0.57 8 0.04 1 Subtotal 13.3 2.06 274 0.83 110 0.07 9 11.6 1.86 215 0.76 88 0.07 7 Stockpiles Proved - - - - - - - 0.1 1.66 2 0.68 1 0.07 0.1 Total Proved - - - - - - - 10.2 1.93 198 0.79 81 0.07 7 Probable 13.3 2.06 274 0.83 110 0.07 9 1.3 1.34 18 0.57 8 0.04 1 Nova Operation Total 13.3 2.06 274 0.83 110 0.07 9 11.7 1.86 216 0.76 89 0.06 7 TABLE 3 — 30 June 2017 and 30 June 2018 TABLE 4 — 30 June 2017 and 30 June 2018 NOVA OPERATION IGO ANNUAL REPORT 2018— 25