Supporting Technical Assessments

FINAL 390.31 JT, 80°/ -, u, r, CN 390.60 JT, 70°/ -, u, r, CN 391.20 JT, 40°/ -, u, r, CN 392.38 JT, 50°/ 320°, u, r, CN 392.44 JT, 40°/ 320°, u, r, CN 392.53 JT, 50°/ 100°, u, r, CN 392.85 - 392.87 SS, 41°/ 320°, CLAY 393.19 VN, 70°/ 170°, u, r, CLAY 393.58 JT, 60°/ 140°, u, r, CN 394.13 JT, 60°/ 20°, u, r, CN 394.40 JT, 20°/ 10°, contact 395.86 JT, 30°/ 310°, u, r, CN 396.07 JT, 60°/ 180°, u, r, CA, trace CLAY 396.31 JT, 50°/ 50°, u, r, CN, partial joint 396.55 VN, 60°/ 230°, u, r, CA 396.97 VN, 50°/ 240°, u, r, CA 397.45 - 397.50 SS, 45°/ 180°, u, r, CLAY 397.86 VN, 65°/ 140°, u, r, CA 398.28 JT, 70°/ 120°, u, r, CA, trace CLAY 398.80 JT, 75°/ 320°, u, r, CN 398.83 JT, 65°/ 30°, u, r, CN 399.07 JT, 50°/ 20°, u, r, CA 399.31 JT, 65°/ 20°, u, r, CN 399.41 JT, 70°/ 260°, u, r, CN 399.49 JT, 80°/ 230°, u, r, CN 399.59 JT, 65°/ 30°, u, r, CA 399.82 JT, 60°/ 340°, st, r, CN WAIPUPU FORMATION Slightly weathered ANDESITE: as per unit starting 380.80 m (continued from layer starting at 389.1m ) Slightly weathered; dark grey porphyritic ANDESITE; moderately strong; pyrite disseminated; sulphide rich Moderately weathered; pale grey; clay altered ANDESITE; weak; pyrite disseminated, non magnetic Slightly weathered; dark grey porphyritic ANDESITE; moderately strong; pyrite disseminated; sulphide rich TCR: 97 RQD: 97 TCR: 100 RQD: 91 TCR: 100 RQD: 100 TCR: 100 RQD: 93 390.4 393.3 394.5 HQTT HQTT HQTT HQTT SW MW SW Sample / Test 390 391 392 393 394 395 396 397 398 399 400 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) 391 392 393 394 395 396 397 398 399 RL (m) 71 70 69 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 : 40 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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