Moscow, February 24, 2021 — Nornickel, the world’s largest producer of palladium and high-grade nickel and a major producer of platinum and copper has partially suspended its mines Oktyabrsky and Taimyrsky.

On February 12, during tunnelling operations, natural groundwater inflow was detected at the 350 meters depth mark in the mine headwall at Oktyabrsky mine. Due to the increased water inflow to the drainage systems of the mine and in accordance with safety procedures and applicable law, the Company has partially suspended operations at the mine until flooding ceases. The waterlogging is currently being eliminated.

Nornickel’s First Vice President and Chief Operating Officer, Sergey Dyachenko, commented: “Partial suspension of the Oktyabrsky mine was required as a preventive measure to ensure the safety of our employees. Operations at the Taimyrsky mine have also been partially suspended, since there are connected underground workings between the two mines, and water has found its way into this mine’s horizon. We are currently installing a cofferdam to stop further water inflow. Once the cofferdam is in place, we will be able to estimate the amount of water accumulated in the mine workings and enhance our response efforts to drain the workings as quickly as possible. We are doing our best to eliminate the flood as quickly as possible, to minimise its impact on our production plans. We will assess the impact of the partial mine suspension on our metal production guidance once the relief operation is complete”.