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Primary document

Nota à imprensa: rompimento da barragem B1

Agência Nacional de Mineração

Where this source supports the record

Each entry separates the article’s editorial relevance note from its exact, section-level claims. A bibliography link without a direct claim is labeled plainly.

  1. Engineering failures · 25 January 2019

    Brumadinho Tailings Dam Collapse

    Córrego do Feijão Mine, Dam B1 · Brazil

    Open article references →
    Why editors use it here

    Contemporaneous Brazilian mining-regulator notice identifying Dam B1, the mine, municipality, and immediate response.

    1. Quick read

      At 12:28 p.m.

      Reviewed 5 August 2026
    2. Trigger and conditions

      The dam lost stability with almost no visible lead time and underwent rapid liquefaction-like movement.

      Reviewed 5 August 2026
    3. Uncertainty

      Technical studies use different volume estimates and emphasize different combinations of drainage, material behavior, construction history, and management decisions.

      Reviewed 5 August 2026
    4. Why it matters

      Brumadinho shows that a technical stability certificate is not the same as safety.

      Reviewed 5 August 2026