Supporting Technical Assessments

FINAL trace Py and other sulphides 250.13 JT, 40°/ 210°, u, r, CA 250.60 JT, 50°/ 40°, u, r, CN 251.09 - 251.11 SS, 88°/ 30°, u, r, CLAY, trace Py and CA; gravel fragments 251.23 VN, 80°/ 160°, u, r, CA 251.32 JT, 40°/ 180°, u, r, CA 251.43 JT, 70°/ 180°, u, r, CA 252.53 JT, 60°/ -, u, r, CA 252.58 JT, 60°/ -, u, r, CA 252.70 JT, 70°/ -, u, r, CA 252.80 JT, 50°/ -, u, r, CN 252.95 JT, 30°/ 330°, u, r, CA 253.12 - 253.13 SS, 50°/ 300°, CLAY 253.32 JT, 30°/ 60°, u, sm, CLAY 253.40 JT, 32°/ 10°, u, sm, CLAY 253.86 VN, 55°/ 350°, u, r, CA 253.90 VN, 38°/ 10°, u, r, CA 254.22 JT, 50°/ 260°, st, r, CA 254.34 VN, 22°/ 270°, u, r, CA 254.36 JT, 45°/ 40°, st, r, CA 254.55 JT, 42°/ 70°, u, r, CA 256.40 VN, 20°/ 100°, u, r, CA, trace other sulphides 256.50 JT, 60°/ 340°, u, r, CN 256.64 JT, 50°/ 110°, st, r, CN 256.94 JT, 58°/ 250°, u, r, CA 257.75 JT, 45°/ 330°, u, r, CA 257.90 VN, 32°/ 308°, u, r, CA, trace Py 258.07 VN, 30°/ 310°, u, r, CA, trace Py 258.36 JT, 25°/ 240°, u, r, CN 258.70 JT, 72°/ 200°, u, r, CN 258.80 JT, 60°/ 220°, u, r, CA 258.85 JT, 65°/ 300°, u, r, CA 259.04 JT, 50°/ 130°, u, r, CN 259.29 JT, 55°/ 150°, u, r, CA 259.38 JT, 20°/ 280°, u, r, CN, trace CA 259.75 - 259.78 SS, 51°/ 220°, u, r, CLAY, trace CA WAIPUPU FORMATION Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; non magnetic; some pale grey clay alteration halos around defects that are weak to moderately strong (continued from layer starting at 237.3m ) 253.20 - 253.90 hydrothermal breccia dyke; pale grey; weak TCR: 100 RQD: 100 TCR: 100 RQD: 94 TCR: 100 RQD: 91 TCR: 100 RQD: 96 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 91 PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW Sample / Test 250 251 252 253 254 255 256 257 258 259 260 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) 251 252 253 254 255 256 257 258 259 RL (m) 119 118 117 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 : 26 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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