Supporting Technical Assessments

FINAL WHIRITOA ANDESITE 9.95 - 10.40 Recovered as silty gravel sized fragments Completely weathered; brownish red; massive welded TUFF; extremely weak (WHIRITOA ANDESITE) (continued from layer starting at 7.1m ) 10.95 - 11.20 Recovered as silty gravel sized fragments CORE LOSS Completely weathered; pale brown speckled black and white; massive welded TUFF; extremely weak; some iron oxidization staining present CORE LOSS Completely weathered; pale brown speckled black and white; massive welded TUFF; extremely weak; some iron oxidization staining present 27-08-2020 23-09-2020 12.45 12.6 14.2 14.8 CW HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT SPT 2/2 3/2 3/2 N = 10 SPT 1/3 3/2 3/2 N = 10 SPT 2/3 3/4 5/7 N = 19 SPT 2/1 3/3 4/1 N = 11 SPT 3/3 4/5 3/5 N = 17 SPT 3/3 3/4 4/5 N = 16 SPT 3/5 7/7 8/7 N = 29 TCR: 100 TCR: 100 TCR: 90 TCR: 43 TCR: 100 TCR: 100 TCR: 100 10 11 12 13 14 15 16 17 18 19 20 Geological Unit Material Description Instrumentation Installation Commenced: 24/08/2020 Easting: 2763752.035 Hole No. : WFBH003 Completed: 27/08/2020 Sheet : 2 of 3 Hole Length : 22.95 Project : WKP Exploration Tunnel - Ground Investigation Client : Oceana Gold Corporation / GWS / Golder Job Number: 12533958 Processed : HJ System: NZMG 1949 Northing: 6423791.265 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 163.112 m Water level Notes and Comments: Refer to explanation sheets for abbreviation and symbols. Shear Vane values are corrected. Ground Water Level Time Date Reading Hole depth (mbgl) (mbgl) Equipment: Tractor Rig, (Rig 83) Orientation: Inclination: Vertical 27/08/20 17:00 12.5 22.95 23/09/20 11:45 13.57 15 End of Hole @ 22.95m Silt Pond Area No water return information Contractor: Alton Drilling Ltd SPT ETR: 81% Depth (m) 11 12 13 14 15 16 17 18 19 RL (m) 153 152 151 150 149 148 147 146 145 144 Graphic Report ID: GENERAL_LOG-BK1 || Project: WILLOWS FARM BHS.GPJ || Library: GHD - NZGD.GLB || Date: 10 May 2021 Weathering Flush Return (%) 25 50 75 Consistency / Relative Density Moisture condition Casing Method Result Sample Number / Type Estimated Strength (MPa) Defect Spacing (mm) EW VW W MS VS ES 20 60 200 600 2000 TCR SCR RQD (%)

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