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Chemical products for industrial purposes, in particular ground mineral raw materials and surface- treated mineral raw materials, in particular for synthetic resins and paints, for use in the chemical industry, the dental industry, for paints, varnishes and coatings, for fireproof products, for ceramics and enamel products and for paper production; kaolin; kaolin as a filler for paper production; feldspar silicates, foundry sand, purified crystalline silica, filter sand and crushed quartz, for industrial use; preservatives for roofs made from calcined kaolin or calcined kaolin-feldspar-quartz mixtures.Packing, sealing and insulating materials for use as fillers for polymer systems and plastics; mica [raw or partially processed].Building materials [not made of metal], in particular ground mineral raw materials and surface-treated mineral raw materials, in particular for use in the construction and chemical industries; silica [quartz]; fireclay; play sand; sand for sports and leisure facilities [e.g. for golf, volleyball, horse racing tracks, etc.]; quartz sand, quartz gravel [for fitter purposes], quartz powder for use in building; bituminous coatings for roofing; bitumen sheets made from calcined kaolin or calcined kaolin -feldspar-quartz mixture for roofs.Wholesale and retail services with industrial minerals.Mining and extraction of industrial minerals using extraction plants.Preparation and refining of industrial minerals with the help of processing plants [material processing].Geological prospecting work, in particular the mining and extraction of industrial minerals with the help of extraction plants, as well as related scientific and technological services and research work.