2508 Clays, Andalusite, Kyanite and Sillimanite, Whether or not Calcined, Mullite, Chamotte or Dinas Earths (Excl. Kaolin and Other Kaolinic Clays, and Expanded Clay)

2508 (01/1988-..) Clays, Andalusite, Kyanite and Sillimanite, Whether or not Calcined, Mullite, Chamotte or Dinas Earths (Excl. Kaolin and Other Kaolinic Clays, and Expanded Clay) 25081000 (01/1988-..) Bentonite 25082000 (01/1988-12/2006) Decolourising Earths and Fuller's Earth 25083000 (01/1988-..) Fireclay (Excl. Kaolin and Other Kaolinic Clays and Expanded Clay) 25084000 (01/2007-..) Clays (Excl. Fireclay, Bentonite, Kaolin and Other Kaolinic Clays and Expanded Clay) 25085000 (01/1988-..) Andalusite, Kyanite and Sillimanite 25086000 (01/1988-..) Mullite 25087000 (01/2004-..) Chamotte or Dinas Earths 25087010 (01/1994-12/2003) Chamotte Earth 25087090 (01/1994-12/2003) Dinas Earth