Supporting Technical Assessments

FINAL 599.95 VN, 50°/ -, u, r, CA, closed, trace Py 602.37 JT, 71°/ -, u, sm, CN 602.47 JT, 48°/ -, st, sm, CN 602.51 JT, 70°/ -, st, r, CN 603.47 JT, 85°/ -, u, r, CN 603.62 JT, 80°/ -, u, r, CN 604.17 JT, 68°/ -, st, sm, CLAY 604.75 - 604.78 SS, 50°/ -, u, r, CLAY, trace gravel fragments, trace Py 604.91 JT, 70°/ -, u, r, CLAY 605.43 JT, 50°/ -, u, r, CLAY 606.02 JT, 50°/ -, st, r, Py 606.38 JT, 65°/ -, u, r, CLAY 606.80 JT, 60°/ -, st, r, CLAY 609.40 JT, 15°/ -, u, sl, CLAY 609.83 JT, 62°/ 60°, u, sl, CLAY WAIPUPU FORMATION Slightly weathered; pale grey; ANDESITE; moderately strong; pyrite disseminated; non magnetic; some dark grey alteration halos at defect boundaries (continued from layer starting at 584.5m ) 600.20 drilling disturbance Moderately weathered; pale grey clay altered ANDESITE; weak; pyrite disseminated; non magnetic TCR: 100 RQD: 100 TCR: 100 RQD: 98 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 605 HQTT HQTT HQTT HQTT HQTT SW MW Sample / Test 600 601 602 603 604 605 606 607 608 609 610 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) 601 602 603 604 605 606 607 608 609 RL (m) -1 -2 -3 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 : 61 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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