Norsk Hydro: Preliminary Findings from Internal Task Force

The internal expert task force established to review the Alunorte alumina refinery after the flooding in February has reported preliminary findings.

The status report has the following main findings:

• Discharge of water overflowing from the adjacent waste-water holding pond into the internal open drain, Canal Velho, in addition to the already communicated rainwater release.
• A release of caustic soda inside the plant due to a power failure on February 17. This was mixed with rain water from the factory area before entering the waste-water holding pond, with overflow into Canal Velho.
• Based on the preliminary findings of the task force, Hydro has no indications of leaks or overflow from the bauxite residue deposit areas.

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