Supporting Technical Assessments

FINAL 269.90 VN, 32°/ 50°, u, r, CA 271.70 JT, 40°/ -, u, r, CLAY 272.21 JT, 38°/ -, u, r, CLAY, trace Py 274.10 JT, 83°/ 40°, u, r, CLAY, trace Py 276.18 VN, 50°/ 60°, u, r, CA, trace QZ 276.90 VN, 30°/ 30°, u, r, CA, trace QZ 277.50 - 277.95 SZ, 20°/ -, st, r, CLAY, possible fault gouge; trace Py and CA , gravel sized fragments of host rock 279.10 VN, 30°/ -, u, r, CA 279.50 VN, 15°/ 335°, u, r, CA WAIPUPU FORMATION Slightly weathered; grey; porphyritic ANDESITE; moderately strong; pyrite disseminated; non magnetic; some pale grey clay alteration halos around defects that are weak to moderately strong (continued from layer starting at 268.5m ) CORE LOSS 0.1m Moderately weathered; grey; porphyritic ANDESITE; weak; pyrite disseminated; non magnetic; some pale grey clay alteration halos around defects that are weak to moderately strong CORE LOSS 0.1m Moderately weathered; grey; porphyritic ANDESITE; weak; pyrite disseminated; non magnetic; some pale grey clay alteration halos around defects that are weak to moderately strong TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 93 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 93 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 2732.743.3 276.95 277.05 PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW MW Sample / Test 270 271 272 273 274 275 276 277 278 279 280 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) 271 272 273 274 275 276 277 278 279 RL (m) 112 111 110 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 : 28 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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