Supporting Technical Assessments

FINAL 211.30 JT, 30°, u, r, CN 212.45 - 212.50 SM, 80°, u, r, CLAY, altered weathered seam; trace gravel and sand sized rock fragments; Ca at boundaries 213.80 VN, 50°, u, r, CA 215.40 VN, 70°, u, r, CA 215.50 VN, 40°, u, sm, CA 216.45 VN, 75°, u, r, CA, dark allteration halo 216.60 VN, 70°, u, r, CA, dark allteration halo 216.65 VN, 75°, u, r, CA, dark allteration halo 216.80 VN, 65°, u, r, CA, dark allteration halo 217.25 VN, 70°, u, r, CA, dark allteration halo 217.80 VN, 65°, u, sm, CA, dark allteration halo 218.13 VN, 60°, u, r, CA, dark allteration halo 219.45 JT, 60°, u, r, CN 210.13 213.10 214.83 215.70 218.40 219.69 WAIPUPU FORMATION Slightly weathered; pale grey; LAPILLI TUFF (andesite); strong; poly-clastic; subangular to subrounded; gravel sized clasts; some cobble sized clasts (continued from layer starting at 206.4m ) 212.45 possible fault gouge/infilled sheared seam; strong clay alteration Slightly weathered; grey; porphyritic ANDESITE; strong; widely spaced randomly orientated calcite veins (<2mm); some with dark alteration halos 216.45 - 218.15 close to moderately widely spaced randomly orientated calcite veins (<2mm) UCS: 11 MPa - PLT 0.93 MPa - PLT 1.82 MPa - UCS: 28 MPa - PLT 0.34 MPa - UCS: 1- 4 MPa 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: 100 212.65 PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW SW Sample / Test 210 211 212 213 214 215 216 217 218 219 220 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) 211 212 213 214 215 216 217 218 219 RL (m) 27 26 25 24 23 22 21 20 19 18 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 : 22 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

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