Supporting Technical Assessments

FINAL 570.45 VN, 30°/ -, u, r, CA, closed, trace Py 571.81 VN, 21°/ -, u, r, CA, closed, trace Py 572.20 VN, 10°/ -, u, r, CA, closed 572.67 JT, 40°/ -, st, r, CA, trace Py 572.95 VN, 20°/ -, u, r, CA, closed 573.51 VN, 30°/ -, u, r, CA, closed 575.50 JT, 50°/ -, u, r, Py 576.76 JT, 71°/ -, u, r, CN 577.52 JT, 80°/ -, u, r, CA 577.60 JT, 65°/ -, u, r, CN, trace Py 577.70 VN, 50°/ -, u, r, CA, closed 578.88 JT, 40°/ -, st, r, CN, trace Py 579.78 JT, 70°/ -, st, r, CN, trace WAIPUPU FORMATION Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; some randomly orientated calcite veins (<2mm); some with dark grey alteration halos at defect boundaries; rare gravel to boulder sized inclusion inclusions of strong fine grained andesite (continued from layer starting at 562.3m ) 575.80 - 576.20 drilling disturbance TCR: 100 RQD: 99 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 97 TCR: 100 RQD: 100 HQTT HQTT HQTT HQTT HQTT SW Sample / Test 570 571 572 573 574 575 576 577 578 579 580 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) 571 572 573 574 575 576 577 578 579 RL (m) 10 9 8 7 Graphic Notes and Comments: Refer to explanation sheets for abbreviation and symbols. Ground Water Level Time Date Reading Hole depth (mbgl) (mbgl) Equipment: Rig 85 Orientation: 301° Inclination: -20° End of Hole @ 706.8m Contractor: Alton Drilling Casing Method Commenced: 17/05/2021 Easting: 2762594 Hole No. : WNDD011 Completed: 6/07/2021 Sheet : 58 of 71 Hole Length : 706.8 Project : WKP Exploration Tunnel - Ground Investigations Client : OceanaGold Corporation Job Number: 12533958 Processed : HJ System: NZMG 1949 Northing: 6424371 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 205 m Flush Return (%) 25 50 75 Weathering Instrumentation Installation Water level Report ID: ROCKLOG || Project: WNDD011.GPJ || Library: GHD - NZGD.GLB || Date: 30 August 2021

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