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GRAVEL
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Mar 20, 2009 - 3:41:46 PM
Mar 20, 2009 - 3:41:46 PM
Natural sand extracted from
rivers, lakes, volcanic deposits or artificial sand. It is used to refine cement,
in the manufacturing of blocks, lattice, slabs and sidewalks, joints of mosaics,
as a complement for asphalt concrete and very fine furnishings.
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