2621 Slag and ash, incl. seaweed ash `kelp` (excl. slag, incl. granulated, from the manufacture of iron or steel and ashes and residues containing metals or metal compounds)

2621 (01/1988-12/2001) Slag and ash, incl. seaweed ash `kelp` (excl. slag, incl. granulated, from the manufacture of iron or steel and ashes and residues containing metals or metal compounds) 26210000 (01/1988-12/2001) Slag and ash, incl. seaweed ash `kelp` (excl. slag, incl. granulated, from the manufacture of iron or steel and ashes and residues containing metals or metal compounds) 26211000 (01/2002-..) Ash and residues from the incineration of municipal waste 26219000 (01/2002-..) Slag and ash, incl. seaweed ash `kelp` (excl. slag, incl. granulated, from the manufacture of iron or steel, ashes and residues containing arsenic, metals or metal compounds and those from the incineration of municipal waste)