Supporting Technical Assessments

FINAL 231.10 JT, 35°, u, r, CN 231.40 231.70 WAIPUPU FORMATION Slightly weathered; grey; LAPILLI TUFF (andesite); strong; poly-clastic; subangular to subrounded gravel sized clasts; minor cobble sized clasts; wide to very widely spaced randomly orientated calcite and pyrite veins (<2mm) (continued from layer starting at 221.3m ) End of Hole @ 231.7m, TD TCR: 100 RQD: 100 TCR: 100 RQD: 100 PQTT PQTT SW Sample / Test 230 231 232 233 234 235 236 237 238 239 240 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) 231 232 233 234 235 236 237 238 239 RL (m) 7 6 5 4 3 2 1 0 -1 -2 Graphic Notes and Comments: Refer to explanation sheets for abbreviation and symbols. Shear Vane values are corrected. Ground Water Level Time Date Reading Hole depth (mbgl) (mbgl) Equipment: RIG 83 Orientation: 0° Inclination: -90° End of Hole @ 231.7m Vibrating Wire Piezometers at 49.00m, 142.00m, 217.00m PLT are corrected to Is(50) Contractor: Alton Drilling Ltd Casing Method Commenced: 29/07/2020 Easting: 2762466.08 Hole No. : WNDD007 Completed: 11/08/2020 Sheet : 24 of 24 Hole Length : 231.7 Project : WKP Exploration Tunnel - Ground Investigations Client : OceanaGold Corporation Job Number: 12533958 Processed : HJ System: NZMG Northing: 6424304.837 Checked : JHS Datum: NZVD2016 Logged : HJ Site : Willows Farm, Waihi North, Scale @ A4 : 1:50 Method: SURVEY RL: 237.07 m Flush Return (%) 25 50 75 Weathering Instrumentation Installation Water level Report ID: ROCKLOG || Project: WNDD007.GPJ || Library: GHD - NZGD.GLB || Date: 15 September 2021 PLT 0.8 MPa UCS 16 MPa

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