Comments by "Suzy Qualcast" (@suzyqualcast6269) on "Unsafe Concrete: Documents suggest complaints have been made for decades" video.

  1.  @TheDavinator999  The Roman buildings surrounding Ampourias are of their concrete construction, and REMAIN.
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  2. WW2 Germans/Atlantic Wall constructions, used to know how to do it. Their efforts remain extant. Upwards faces facing the skies need bitumen in si to seal and preserve. Where not intentionally damaged to destruction they remain, as good as ever, even if allowed to slip into the seas. .
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  3. WW2 Germans/Atlantic Wall constructions, used to know how to do it. Their efforts remain extant. Upwards faces facing the skies need bitumen in si to seal and preserve. Where not intentionally damaged to destruction they remain, as good as ever, even if allowed to slip into the seas. .
    1