Supporting Technical Assessments

FINAL 591.23 JT, 42°/ -, st, sm, CLAY, trace Py 594.50 JT, 58°/ 160°, st, r, CLAY 594.70 JT, 81°/ 30°, u, sl, CLAY, trace Py 594.87 JT, 53°/ 75°, u, sl, CLAY 594.93 JT, 45°/ 60°, u, sl, CLAY 594.95 JT, 60°/ 100°, u, sl, CLAY 595.12 JT, 65°/ 0°, st, r, CN, trace Py 595.37 JT, 72°/ 80°, u, r, CN 596.14 JT, 20°/ -, u, r, CN 596.62 JT, 60°/ -, u, r, CN 597.11 JT, 62°/ 120°, u, r, CN 597.96 JT, 58°/ 55°, u, r, CLAY 598.37 JT, 65°/ 310°, st, r, CN 598.47 JT, 70°/ 40°, st, r, CN 598.66 JT, 40°/ 155°, st, r, CN 599.80 VN, 25°/ -, u, r, CA, closed 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 ) TCR: 100 RQD: 100 TCR: 100 RQD: 97 TCR: 100 RQD: 100 TCR: 100 RQD: 100 HQTT HQTT HQTT HQTT SW Sample / Test 590 591 592 593 594 595 596 597 598 599 600 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) 591 592 593 594 595 596 597 598 599 RL (m) 3 2 1 0 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 : 60 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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