IGO Interactive Annual Report 2018

IGO’s public reporting governance includes a chain of assurance measures. Firstly, IGO ensures that the Competent Persons responsible for public reporting: • are current members of a professional organisation that is recognised in the JORC Code framework; • have sufficient mining industry experience that is relevant to the style of mineralisation and reporting activity, to be considered a Competent Person as defined in the JORC Code; • have provided IGO with a written sign-off on the results and estimates that are reported, stating that the report agrees with supporting documentation regarding the results or estimates prepared by each Competent Person; and • have prepared supporting documentation for results and estimates to a level consistent with normal industry practices – including the JORC Code Table 1 Checklists for any results and/or estimates reported. IGO’s Mineral Resource and Ore Reserve estimates as at 30 June 2018 and 30 June 2017 are listed on the following pages of this report. The Mineral Resource estimates are reported inclusive of Ore Reserve estimates. The totals and average of some reports may appear inconsistent with the parts, but this is due to rounding of values to levels of reporting precision commensurate with the confidence in the respective estimates. The complete JORC Code reports, including JORC Code Table 1 checklists, which detail the material assumptions and technical parameters for each estimate, can be found at www.igo.com.au under the menu ‘Our Business – Mineral Resources and Ore Reserves'. The JORC Code Competent Person statements for the 30 June 2018 estimates are included on page 28 of this annual report. MINERAL RESOURCES AND ORE RESERVES IGO ANNUAL REPORT 2018— 23