dust trails

  1. Mick West

    Explained: "Smoke Trails" On 9/11 World Trade Center Falling Debris [Dust/Powder]

    When the World Trade Center towers collapsed they produced many tons of dust, powder, and granular material. This was from two main sources: drywall and concrete. After the initial collapse the bottom half of the core of the building was still standing. It was covered in tons of this material...
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