Supporting Technical Assessments

FINAL 640.36 JT, 49°/ -, u, r, CN 641.05 VN, 60°/ -, u, r, CA, closed 641.07 VN, 30°/ -, u, r, CA, closed 641.24 VN, 30°/ -, u, r, CA, closed 641.34 VN, 20°/ -, u, r, CA, closed 641.49 JT, 50°/ -, u, r, CA 641.95 JT, 60°/ -, u, r, CA, trace CLAY and Py 642.95 JT, 65°/ -, u, r, CN 643.21 VN, 35°/ -, u, r, CA, closed 643.27 VN, 32°/ -, u, r, CA, closed 643.58 VN, 20°/ -, u, r, CA, closed 643.78 VN, 78°/ -, u, r, CA, closed 643.85 VN, 28°/ 300°, u, r, CA, closed 644.13 VN, 32°/ 300°, u, r, CA, closed 644.46 VN, 38°/ 300°, u, r, CA, closed 644.73 JT, 60°/ 240°, u, r, CA 644.89 VN, 30°/ 300°, u, r, CA, closed 645.17 VN, 22°/ 295°, u, r, CA, closed 645.47 VN, 45°/ 30°, u, r, CA, closed 645.51 VN, 28°/ 330°, u, r, CN, closed 645.87 - 645.92 VN, 28°/ 280°, u, r, CA, closed 645.93 VN, 28°/ 290°, u, r, CA, closed 646.10 JT, 70°/ 60°, u, r, CA 646.13 VN, 21°/ 270°, u, r, CA, closed 647.12 VN, 20°/ 235°, u, r, CA, closed 647.35 JT, 60°/ 260°, u, r, CA, trace Py 647.56 VN, 55°/ 240°, u, r, CA, closed 647.70 JT, 70°/ 60°, u, r, CA 647.73 VN, 80°/ 300°, u, r, CA, closed 648.14 VN, 20°/ 230°, u, r, CA, closed 648.28 VN, 22°/ 225°, u, r, CA, closed 648.52 VN, 25°/ 200°, u, r, CA, closed 648.61 JT, 60°/ 280°, u, r, CA, trace Py 648.86 VN, 45°/ 300°, u, r, CA, closed, trace Py 649.26 VN, 40°/ 250°, u, r, CA, closed, trace Py 649.37 VN, 55°/ 265°, u, r, CA, closed, trace Py 649.65 VN, 50°/ 100°, u, r, CA, closed, trace Py WAIPUPU FORMATION Slightly weathered; pale grey; porphyritic ANDESITE; strong; pyrite disseminated; some randomly orientated calcite veins (<2mm); some with dark grey alteration halos; some gravel to boulder sized inclusions of strong fine grained andesite (continued from layer starting at 625.0m ) Slightly weathered; dark grey; porphyritic ANDESITE; strong; sulphide rich; pyrite disseminated; non magnetic; some randomly orientated calcite veins (<2mm) with dark grey halos Slightly weathered; pale grey; porphyritic ANDESITE; strong; pyrite disseminated; non magnetic; frequent randomly orientated calcite veins (2-20mm); some with dark grey alteration halos TCR: 100 RQD: 100 TCR: 100 RQD: 97 TCR: 100 RQD: 93 TCR: 100 RQD: 92 641.4 643.9 HQTT HQTT HQTT HQTT SW Sample / Test 640 641 642 643 644 645 646 647 648 649 650 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) 641 642 643 644 645 646 647 648 649 RL (m) -14 -15 -16 -17 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 : 65 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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