CHILE Andacollo Andacollo is an open-pit copper mine and milling operation operated by Compañía Minera Teck Carmen de Andacollo (“CMCA”), a 90% owned subsidiary of Teck Resources Ltd. (“Teck”); Empresa Nacional de Minería holds the remaining 10%. Gold is produced as a by- product of copper production. The mine is located in central Chile, Region IV, in the foothills of the Andes Mountains approximately two kilometers southwest of the town of Andacollo. STREAM OPERATOR Teck Resources Ltd. MINERALIZATION STYLE Porphyry Cu-Au MINE TYPE Open-pit METAL(S) Copper, Gold PRODUCT Concentrate CURRENT STREAM 100% of Payable Gold CURRENT ONGOING PAYMENT 15% of monthly average gold price YEAR OF ACQUISITION 2015 TERM OF STREAM Life of Mine MINE LIFE 2037 1 Operational Overview The Andacollo operation consists of an open-pit mine, sulfide concentrator and copper heap leach facility. Mining of the oxide and supergene enrichment zone of the Andacollo copper deposit began in January 1996. Supergene and oxide ores were processed by heap leaching and production of copper cathode in a solvent extraction-electrowinning (SX-EW) plant. Production from the heap leach operation was halted in 2023. Beginning in 2010, the mine began processing hypogene ore (which underlies the supergene ore) through a mill and concentration plant at site producing concentrates for third-party offtake. Copper concentrate is produced by processing hypogene ore through semi-autogenous grinding and a flotation plant with the capacity to process up to 55,000 tonnes of ore per day depending on ore hardness. 2025 OPERATOR GUIDANCE Andacollo is expected to produce 35,000 to 39,000 ounces of gold. 2 LONGER-TERM OPERATOR OUTLOOK Teck expects the mine plan to transition to higher grade ore and copper production is expected to increase from approximately 39,700 tonnes in 2024 to between 45,000 and 55,000 tonnes per year in each of 2025, 2026 and 2027, before declining to a range of 35,000 to 45,000 tonnes in 2028. 3 Gold and copper grades have been relatively positively correlated and gold production has tended to track copper production, although there can be no assurance that these correlations will continue in the future. 1 Source: Teck, 2024 Annual Information Form: The current life of mine for Carmen de Andacollo is expected to continue until 2037, although additional permits or amendments will be required. 2 Source: Production estimate received from Teck. 3 Source: Teck, January 20, 2025, Press Release Introduction Attributes of Our Business Portfolio Overview Expected Performance and Outlook Portfolio Details Reference Materials 45