Supporting Technical Assessments

FINAL WHIRITOA ANDESITE Moderately weathered; yellowish red TUFF BRECCIA (andesite); weak (continued from layer starting at 25.5m ) 30.10 JT, 55°, u, sl, VN, CLAY 30.20 JT, 40°, u, sl, VN, CLAY 30.57 JT, 60°, u, sl, VN, CLAY Moderately weathered; red; welded TUFF (andesite); weak End of Hole @ 32m, Target Depth 31.1 MW HQTT HQTT 30.35 C-PLT5 RQD: 100 TCR: 100 RQD: 40 TCR: 100 RQD: 89 30 31 32 33 34 35 36 37 38 39 40 Geological Unit Material Description Instrumentation Installation Commenced: 29/10/2020 Easting: 2763515.665 Hole No. : WFBH014 Completed: 2/11/2020 Sheet : 4 of 4 Hole Length : 32 Project : WKP Exploration Tunnel - Ground Investigation Client : Oceana Gold Corporation / GWS / Golder Job Number: 12533958 Processed : HJ System: NZMG 1949 Northing: 6423696.752 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 200.02 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: Fly Rig (Rig #33) Orientation: Inclination: Vertical 02/11/20 00:00 8 32 End of Hole @ 32m Portal Entrance Geotech Hole Lost water return at 4.7m Full water return at 5.45m No SPTs after 9.5m due to rig lifting Contractor: Alton Drilling Limited Depth (m) 31 32 33 34 35 36 37 38 39 RL (m) 169 168 167 166 165 164 163 162 161 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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