Supporting Technical Assessments

FINAL 100.50 JT, 20°, u, r, CN 100.65 - 101.30 VN, 86°, u, r, CA, sub-vertical vein through core 101.80 VN, 65°, u, r, CA 102.02 JT, 15°, u, r, CN 102.85 JT, 50°, u, r, CN 104.50 JT, 15°, u, r, CN 105.12 JT, 10°, u, r, CN 105.65 JT, 20°, u, r, CN 105.70 JT, 20°, u, r, CN 106.50 JT, 10°, u, r, CN 107.20 VN, 50°, u, r, CA 108.00 JT, 10°, u, r, CN 108.50 JT, 8°, u, r, CN 109.00 VN, 25°, u, r, CA 109.30 JT, 15°, u, r, CN 102.10 104.50 107.30 108.90 WAIPUPU FORMATION Slightly weathered; grey; LAPILLI TUFF (andesite); moderately strong; poly-clastic; angular to subangular gravel sized clasts; some cobble sized clasts; calcite present at clast boundaries (continued from layer starting at 80.7m ) Moderately weathered; pale grey porphyritic ANDESITE; weak; clay altered; partially recovered as gravel sized fragments; drilling disturbance Slightly weathered; grey; LAPILLI TUFF (andesite); strong, poly-clastic; angular to subangular gravel sized clasts; some cobble sized clasts PLT 1.29 MPa - PLT 0.3 MPa - PLT 1.86 MPa TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 80 TCR: 100 RQD: 60 TCR: 100 RQD: 100 TCR: 100 RQD: 97 TCR: 100 RQD: 95 TCR: 100 RQD: 100 102.85 104.1 PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW MW SW Sample / Test 100 101 102 103 104 105 106 107 108 109 110 20 60 200 600 2000 Estimated Strength (MPa) Defect Spacing (mm) Description (and sub Detail) Visual Defect Result Geological Unit Material Description Number / Type EW VW W MS S VS ES TCR RQD SCR (%) Depth (m) 101 102 103 104 105 106 107 108 109 RL (m) 137 136 135 134 133 132 131 130 129 128 Graphic 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: RIG 83 Orientation: 0° Inclination: -90° End of Hole @ 231.7m Vibrating Wire Piezometers at 49.00m, 142.00m, 217.00m PLT are corrected to Is(50) Contractor: Alton Drilling Ltd Casing Method Commenced: 29/07/2020 Easting: 2762466.08 Hole No. : WNDD007 Completed: 11/08/2020 Sheet : 11 of 24 Hole Length : 231.7 Project : WKP Exploration Tunnel - Ground Investigations Client : OceanaGold Corporation Job Number: 12533958 Processed : HJ System: NZMG Northing: 6424304.837 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 237.07 m Flush Return (%) 25 50 75 Weathering Instrumentation Installation Water level Report ID: ROCKLOG || Project: WNDD007.GPJ || Library: GHD - NZGD.GLB || Date: 15 September 2021

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