Tailings dams are important facilities for the management and storage of tailings, and if a catastrophic failure occurs, the surrounding environment and local communities could suffer severe impacts. Our Group recognizes that ensuring the safety of tailings dams is an extremely important issue for local communities, even at overseas mines that we do not directly operate. In cooperation with stakeholders, including joint venture partners and local communities, we are working to prevent disasters such as tailings dam failures by implementing appropriate design, management, and review processes.

At overseas mines in which we invest, we work with joint venture partners to comply with the Global Industry Standard on Tailings Management (GISTM), an international safety standard, in the management of tailings dams.

GISTM compliance was achieved in 2023 for El Mauro tailings dam, and work in 2024 included a third-party evaluation for the facility. At Quillayes tailings dam, a smaller-scale tailings facility, the self-assessment process for GISTM compliance is underway.

Actions are being taken to achieve compliance with the GISTM for the Amburgo and Laguna Seca tailings dams. As of August 2025, an assessment is ongoing for the former, while a third-party review of the latter was conducted in July 2025.

Actions are being taken to achieve GISTM compliance for the tailings dam.

Through these initiatives, our company aims to ensure the safety of tailings dams and minimize risks to local communities and the environment.