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- FEASIBILITY STUDY - CAPITAL COST SUMMARY Area Detail Initial CAPEX Sustaining Closure CAPEX CAPEX (M $) (M $) (M $) (2) Mine Costs (1) 84 119 Total CAPEX (M$) 203 Processing Plant 433 49 483 Direct Costs Notes: 1. Initial mining CAPEX includes environmental remediation costs. 2. Closure and mitigation assume self-performed costs, which will differ for those assumed for financial assurance calculations required by regulators. Costs include stream and wetland On-Site Infrastructure 191 84 275 restoration and reclamation costs. Off-Site Infrastructure 116 116 3. Numbers have been rounded and may not sum correctly. Indirect Costs 233 - - 233 Owner's Costs 38 Offsite Environmental Mitigation Costs 14 I I 38 Onsite Mitigation, Monitoring and 3 23 98 125 Closure Costs (2) Total CAPEX without Contingency (3) 1,113 275 98 1,487 Contingency 150 20 1 171 14 Based on the 2020 Feasibility Study (FS) which is intended to be read as a whole and sections should not be read or relied upon out of context. The information in this presentation is subject to the assumptions, exclusions and qualifications contained in the FS. See "Regulatory Information" at the end of this presentation. For a summary of differences between the FS and TRS, see "Cautionary Note and Technical Disclosure" at the beginning of this presentation. Total CAPEX with Contingency (3) 1,263 296 99 1,658 34 44

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