Supporting Technical Assessments

FINAL 540.18 JT, 70°/ 240°, u, r, CN 540.40 JT, 72°/ 240°, st, r, CN 541.00 JT, 79°/ 240°, u, r, CN, trace Py 542.04 JT, 35°/ -, u, r, Py, trace other sulphides 542.73 JT, 42°/ -, u, r, CN 545.07 JT, 68°/ -, u, r, CN, trace Py 546.24 JT, 60°/ -, u, r, CN, trace Py 546.71 VN, 35°/ -, u, r, CA, closed 546.73 JT, 75°/ -, u, r, Py 546.87 JT, 76°/ -, u, r, CN, trace Py 547.00 JT, 60°/ -, u, r, Py 547.67 JT, 80°/ -, u, r, Py 548.10 JT, 80°/ -, u, r, CN 548.28 JT, 48°/ -, u, r, Py 549.06 JT, 81°/ -, st, r, CN, trace CLAY WAIPUPU FORMATION Slightly weathered; grey; fine grained ANDESITE; strong; some calcite phenocrysts (possible intermittent flow/large clast) (continued from layer starting at 534.0m ) 543.00 - 544.80 drilling disturbance Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; some dark grey halos around defects; rare gravel to boulder sized inclusion inclusions of strong fine grained andesite TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 99 TCR: 100 RQD: 100 546.75 HQTT HQTT HQTT HQTT SW Sample / Test 540 541 542 543 544 545 546 547 548 549 550 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) 541 542 543 544 545 546 547 548 549 RL (m) 20 19 18 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 : 55 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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