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    • Giant rolls of white paper in a factory.
    Rights: Image licensed through 123RF Limited Published 25 September 2012 Size: 83 KB Referencing Hub media

    Calcium carbonate is used as a filler in the manufacture of white paper. It increases the brightness and improves the opacity of the paper.

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      Limestone uses

      The calcium carbonate content of limestone rocks has been used from the earliest civilisations, dating back to 14,000 BCE, to its extensive use in modern times. It is a valuable resource that ...

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