Supporting Technical Assessments

FINAL trace CLAY 490.05 JT, 71°/ 350°, u, r, CA 490.40 JT, 63°/ 150°, u, r, CN 490.70 JT, 68°/ 5°, u, r, CA 490.90 JT, 65°/ 20°, u, r, CA 491.00 JT, 55°/ 40°, u, r, CA 491.13 JT, 75°/ 0°, u, r, CA 491.30 VN, 20°/ 320°, u, r, CA, closed 491.32 JT, 75°/ 20°, u, r, CA 491.88 JT, 75°/ 20°, u, r, CA 492.54 VN, 20°/ 60°, u, CA 492.75 VN, 12°/ 180°, u, CA 493.00 VN, 28°/ 119°, u, CA 494.62 JT, 30°/ 60°, u, sl, CLAY 495.30 VN, 21°/ 80°, u, r, Py 496.41 JT, 85°/ 350°, u, r, CN 498.12 JT, 66°/ 82°, u, r, CA 499.13 JT, 70°/ 280°, u, r, CN 499.24 JT, 79°/ 20°, st, r, CN 499.46 JT, 44°/ 97°, u, r, CA WAIPUPU FORMATION Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; frequent randomly orientated calcite veins (<2mm); some with dark grey alteration halos (continued from layer starting at 486.3m ) TCR: 100 RQD: 100 TCR: 100 RQD: 99 TCR: 100 RQD: 100 TCR: 100 RQD: 100 HQTT HQTT HQTT HQTT SW Sample / Test 490 491 492 493 494 495 496 497 498 499 500 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) 491 492 493 494 495 496 497 498 499 RL (m) 37 36 35 34 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 : 50 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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