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, OTHER THAN THOSE OF HEADING 6811 OR 6812 OR OF CHAPTER 69