Supporting Technical Assessments

FINAL 160.20 VN, 45°, u, r, CA, trace Py 162.05 JT, 35°, u, r, CLAY 162.20 JT, 30°, u, r, CLAY 162.95 JT, 20°, u, r, CLAY 164.14 VN, 60°, u, r, Py, trace Ca and other sulphides 164.70 VN, 65°, u, r, CA, trace Py 164.80 JT, 45°, u, r, CN 165.40 VN, 50°, u, r, CA 165.50 VN, 65°, u, r, CA 165.90 VN, 50°, u, r, CA 166.00 VN, 55°, u, r, CA 167.50 VN, 40°, u, r, CA, trace CLAY 167.80 VN, 70°, u, r, CA, trace CLAY 169.35 VN, 50°, u, r, CA 169.75 JT, 48°, u, r, CLAY, trace Ca 161.08 162.60 165.10 167.90 WAIPUPU FORMATION Moderately weathered; pale grey; LAPILLI TUFF (andesite); moderately strong; some clay alteration; poly-clastic; angular to subangular gravel sized clasts 162.00 weak; increased clay alteration Slightly weathered; dark grey; LAPILLI TUFF (andesite); strong; poly-clastic; subangular to subrounded gravel sized clasts; close to moderately wide spaced randomly orientated calcite veins (<2mm); pyrite disseminated Moderately weathered; pale grey; LAPILLI TUFF (andesite); weak; clay alteration; angular to subangular gravel sized clasts Slightly weathered; grey; LAPILLI TUFF (andesite); strong; poly-clastic; angular to subangular gravel sized clasts; some cobble sized clasts; closely to widely spaced randomly orientated calcite veins (<2mm); pyrite ad other sulphides disseminated in matrix UCS: 15 MPa - PLT 0.66 MPa - PLT 1.23 MPa - PLT 0.03 MPa - TCR: 100 RQD: 100 TCR: 100 RQD: 94 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 100 TCR: 100 RQD: 92 160.2 164.1 166.4 168.8 PQTT PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW MW SW MW SW Sample / Test 160 161 162 163 164 165 166 167 168 169 170 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) 161 162 163 164 165 166 167 168 169 RL (m) 77 76 75 74 73 72 71 70 69 68 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 : 17 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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