08.12 - Operation of gravel and sand pits; mining of clays and kaolin
08.12.11 - Natural sands
08.12.12 - Granules, chippings and powder; pebbles, gravel
08.12.13 - Mixtures of slag and similar industrial waste products, whether or not incorporating pebbles, gravel, shingle and flint for construction use
08.12.21 - Kaolin and other kaolinic clays
08.12.22 - Other clays, andalusite, kyanite and sillimanite; mullite; chamotte or dinas earths
Operation of gravel and sand pits; mining of clays and kaolin
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