China Nonferrous Mining cuts 2025 production guidance after mine incident

China Nonferrous Mining Corporation Limited is undertaking comprehensive rehabilitation of the main and auxiliary shafts at its Chambishi Southeast Mine in Zambia. This follows a fatal incident in late June 2025, attributed to the spalling of an auxiliary shaft's inner wall. Investigations revealed long-term erosion and damage to concrete shaft walls in both the main and auxiliary shafts, which traverse multiple aquifers.

Remediation, which formally began in September 2025, involves restoring damaged sections and installing new composite shaft wall structures. While auxiliary shaft repairs are complete, work on the main shaft is ongoing, with the entire project anticipated to conclude by mid-December 2025. Production at Chambishi Southeast Mine will remain temporarily suspended during this construction period.

Consequently, China Nonferrous Mining Corporation Limited has adjusted its 2025 annual production guidance for self-owned mines. The projected volume has been revised downwards from 160,000 tonnes to 140,000 tonnes.