Supporting Technical Assessments

FINAL sulphides 109.71 JT, 35°/ 50°, u, r, CA, trace sulphides 109.85 VN, 40°/ 340°, u, r, CA 110.20 JT, 28°/ 335°, u, sl, CLAY, trace Py 110.60 JT, 51°/ 48°, u, r, CLAY 111.08 JT, 55°/ 280°, u, sm, CLAY, trace CA 111.35 JT, 55°/ 190°, u, r, CA 111.60 JT, 20°/ 150°, u, r, CLAY, trace Py 113.30 JT, 52°/ 280°, u, r, CA 113.62 VN, 22°/ 80°, u, r, CA 113.73 VN, 40°/ 285°, u, r, CA 114.75 JT, 50°/ 240°, u, r, CA 115.17 JT, 60°/ 250°, st, r, CA, trace CLAY 116.48 JT, 48°/ -, u, r, CA 116.74 JT, 65°/ -, u, r, CN, trace CLAY 116.90 - 116.95 SS, 48°/ 240°, st, r, CLAY, trace gravel and sand sized fragments of andesite; CA at boundaries 117.61 JT, 62°/ 265°, u, r, CN 118.15 JT, 71°/ 35°, st, sm, CA, trace CLAY 118.21 VN, 60°/ 222°, u, r, CA 119.51 JT, 66°/ 85°, u, r, CLAY 119.53 - 119.57 VN, 70°/ 90°, u, r, CA, pebble dyke (angular gravel fragments), CA at WAIPUPU FORMATION Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; non magnetic; some randomly orientated calcite veins (2-6 mm) with pale grey alteration halos; some gravel to boulder sized inclusions of red (hematite altered) andesite (continued from layer starting at 67.5m ) Highly weathered; grey; clast altered ANDESITE; weak; recovered partially as gravel sized fragments Slightly weathered; grey; porphyritic ANDESITE; strong; pyrite disseminated; non magnetic; frequent randomly orientated calcite veins (2-6 mm) with pale grey alteration halos; some gravel to boulder sized inclusions of red (hematite altered) andesite TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 96 TCR: 100 RQD: 99 111.3 112.9 PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW HW SW Sample / Test 110 111 112 113 114 115 116 117 118 119 120 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) 111 112 113 114 115 116 117 118 119 RL (m) 167 166 165 164 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 : 12 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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