Supporting Technical Assessments

FINAL 170.20 VN, 30°, u, r, CA 170.50 VN, 27°, u, r, CA 170.62 VN, 30°, u, r, CA 170.80 VN, 34°, u, r, CA 171.32 VN, 28°, u, r, CA 171.50 VN, 40°, u, r, CA 171.70 VN, 40°, u, r, CA 171.94 VN, 40°, u, r, CA 172.15 VN, 70°, u, r, CA 172.58 VN, 52°, u, r, CA 172.70 VN, 50°, u, r, CA, 10-25mm 172.95 VN, 48°, u, r, CA 175.40 VN, 75°, u, r, CA 175.70 VN, 60°, u, r, CA 175.85 VN, 40°, u, r, CA, 5-10mm 177.85 JT, 40°, u, r, CLAY, trace Ca 178.40 VN, 70°, u, r, CA, dark alteration halo 170.10 174.00 WAIPUPU FORMATION 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 (continued from layer starting at 168.8m ) 178.10 - 178.23 cobble of pale grey andesite UCS: 11 MPa - PLT 2.08 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 PQTT PQTT PQTT PQTT PQTT PQTT PQTT SW Sample / Test 170 171 172 173 174 175 176 177 178 179 180 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) 171 172 173 174 175 176 177 178 179 RL (m) 67 66 65 64 63 62 61 60 59 58 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 : 18 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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