slag-wool, rock-wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound- insulating or sound absorbing mineral materials (excl. articles of light concrete, asbestos, asbestos- cement, cellulose fibre-cement or the like, mixtures and other articles of or based on asbestos, and ceramic products)