This class includes:
——manufacture of millstones, sharpening or polishing stones and natural or artificial abrasive products, including abrasive products on a soft base (e.g. sandpaper) 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. asphalt-based adhesives, coal tar pitch etc.
——carbon and graphite fibers and products (except electrodes and electrical applications)

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