Vale clarifies on Forquilha III dam
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Vale clarifies on Forquilha III dam
Rio de Janeiro, April 5, 2024 – In attention to press reports that address the safety conditions of the Forquilha
III dam, located in Ouro Preto, MG, in particular, the article entitled “Vale detects anomaly in Ouro Preto dam
drain”, published by the Brazilian media outlet Portal G1 Minas, Vale S.A. (“Vale” or “Company) clarifies that the
detection, analysis and correction of anomalies in a tailing dam structure is a normal procedure within the
tailings and dams' management system and is aligned with the industry's global standards (GISTM).
The accumulation of sedimented material at the outlet of a drainage device was detected on March 15, 2024.
The company promptly reported the condition to authorities and developed an action plan together with the
Brazilian National Mining Agency (“ANM”) and the independent technical audit company that supervises the
structure and its decharacterization works, while following the situation closely. All instruments installed to
monitor the structure did not show any changes in its conditions.
It is noteworthy that Vale activated the level 3 emergency protocol for the Forquilha III dam in 2019, when was
carried out the evacuation of its Self-Rescue Zone (“ZAS”), which remains with no presence of people, pets and
farm animals. Vale prioritizes the safety of its dams, operations, employees, and communities, with
transparent actions. The Company will continue to diligently supervise the safety performance of the Forquilha III dam and will continue to take actions to establish satisfactory safety and stability levels for the structure, until its decharacterization is complete.