GHD | Oceana Gold NZ Ltd | 12552081 | Geochemical Assessment Wharekirauponga Underground Mine (WAI985-000-REP-LC-0013) 23 Core intervals that contained concentrations of gold (where existing data was available) and veins of highly silicified zones were excluded; Core intervals logged as not having an ‘Argillic’ or strong clay alteration were excluded; and Core intervals logged as heavily weathered or, displaying prevalent oxidation were excluded. Figure 17 shows a visual comparison of some of the sample cores selected for column testing. Figure 17 Visual comparison between selected core samples utilised for column testing These columns were set up at OceanaGold’s existing operations at Waihi in October 2021. Results to date (May 2022) are included in Appendix C.
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