Manufacture of other non-metallic mineral products n.e.c.

This class includes abrasive products and other non-metallic mineral products. It includes: - manufacture of millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, trueing or cutting, hand sharpening or polishing stones - manufacture ofnatural or artificial abrasive powder or grain, on a base of textile material, of paper, of paperboard or of other materials, whether or not cut to shape or sewn or otherwise made - manufacture of friction material and unmounted articles thereof with a base of mineral substances or of cellulose - manufacture of mineral insulating materials: * slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays and similar heat-insulating, sound-insulating or sound-absorbing materials - manufacture of articles of diverse mineral substances: * worked mica and articles of mica, of peat, of graphite (other than electrical articles) etc. - manufacture of articles of asphalt or similar material, e.g. petroleum bitumen, coal tar pitch etc. - manufacture of carbon and graphite fibers and products (except electrodes and electrical applications) - manufacture of artificial corundum This class includes also: - calcination of kaolin - drying and grinding of clay into clay powder

This class excludes: - manufacture of glass wool and non-woven glass wool products, see 2310 - manufacture of carbon or graphite gaskets, see 2819