Earnings · Brazil
Key Facts
—What happened A pipeline at CSN’s Casa de Pedra mine in Congonhas, Minas Gerais, leaked iron-ore sediment on 6 August 2026, reaching a Vale gatehouse and the Córrego Maria José creek.
—Legal action The Minas Gerais environmental secretariat Semad stated CSN would be fined, and water monitor Igam ordered emergency sampling of the affected waterway.
—Company response CSN characterised the leak as limited and quickly resolved, saying the line carried material only within the industrial area and that no one was injured.
