Slag, ash and residues containing mainly niobium or tantalum
Slag, ash and residues containing mainly tin
Slag, ash and residues containing mainly titanium
Slag, ash and residues containing metals or metal compounds (excl. those from the manufacture of iron or steel and those containing primarily zinc, lead, copper, aluminium, nickel, niobium, tantalum, tin or titanium, those containing arsenic, mercury, thallium or their mixtures of a kind used for the extraction of arsenic or those metals or for the manufacture of their chemical compounds and those containing antimony, beryllium, cadmium, chromium or their mixtures)