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61 — Sand, gravel, clay and slag

    Descendants
    Code Description
    611 Sand for industrial use
    612 Ordinary sand and gravel
    613 Pumice stone, including pumiceous sand and gravel
    614 Clay and clay earth
    615 Slag not for recovery of metals, ash, dross

    Heading of aggregated item NSTR agregada anglès to which it belongs

    15 Crude and manufactured minerals

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