Supporting Technical Assessments

FINAL TOPSOIL RESIDUAL SOIL - ALLOPHANE SILT, some sand; dark brown. Very soft, moist, low plasticity, trace rootlets. Sand: fine to medium. (TOPSOIL) Sandy silty CLAY; orange brown. Soft; moist; high plasticity; sand, fine (RESIDUAL SOIL - ALLOPHANE) Silty CLAY with some sand and trace gravel; orangish brown. Stiff; moist; high plasticity; sand, fine; gravel, fine, subangular to subrounded 3.00 becomes very soft 6.10 becomes soft CLAY; light grey. Firm; moist; high plasticity 7.50 becomes hard 7.60 - 7.75 Extremely weak corestone of andesite Silty CLAY some sand and minor gravel; pale greyish mottled white and orange. Firm; moist; high plasticity; sand fine to coarse; gravel, fine to medium subrounded andesite 9-11-2020 0.2 0 1.6 6.5 8.3 VS S St VS S F H F M M M M M HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT HQTT SPT 1/0 2/2 4/4 N = 12 SPT 1/0 0/0 0/1 N = 1 SPT 0 N = 0 SPT 1/0 0/1 1/1 N = 3 SPT 1/4 40/7 5/4 N > 50 SPT 5/3 2/2 2/2 N = 8 1.20 2.45 4.00 6.55 1.40 2.65 4.20 6.75 D-D1 D-D2 D-D3 D-D4 TCR: 100 TCR: 100 TCR: 100 TCR: 76 TCR: 100 TCR: 100 TCR: 100 0 1 2 3 4 5 6 7 8 9 10 Geological Unit Material Description Instrumentation Installation Commenced: 6/11/2020 Easting: 2763862.286 Hole No. : WFBH016 Completed: 9/11/2020 Sheet : 1 of 2 Hole Length : 15.45 Project : WKP Exploration Tunnel - Ground Investigation Client : Oceana Gold Corporation / GWS / Golder Job Number: 12533958 Processed : HJ System: NZMG 1949 Northing: 6423642.974 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 166.16 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 (83) Orientation: Inclination: Vertical 09/11/20 00:00 5.3 15.45 End of Hole @ 15.45m Hardstand Area No water return information Contractor: Alton Drilling Limited Depth (m) 1 2 3 4 5 6 7 8 9 RL (m) 166 165 164 163 162 161 160 159 158 157 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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