Teck Reports Mechanical Issue at Carmen de Andacollo Mill and Shiploader Outage at Quebrada Blanca Port

TECK
October 05, 2025

Teck Resources Limited today announced a mechanical issue at its Carmen de Andacollo (CdA) Operations in Chile, necessitating a maintenance shutdown of the SAG mill. Production is estimated to be interrupted for approximately one month for repairs.

CdA plans to mitigate the impact by rescheduling other planned plant maintenance to coincide with the mill downtime. Teck does not expect a material production impact from this downtime, and its previously disclosed guidance for 2025 total annual copper production and CdA annual copper production remains unchanged.

Separately, an unrelated temporary outage of the shiploader occurred at the Quebrada Blanca (QB) port facility in Northern Chile, with repairs estimated to take about one month. Operations at the QB mine and plant continue normally, and alternative shipping arrangements are available through other ports. Teck does not expect a material sales impact from this outage, and previously disclosed guidance for 2025 annual copper production for QB remains unchanged.

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