- 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
26201100
- - Hard zinc spelter
26201900
- - Other
26202100
- - Leaded gasoline sludges and leaded anti-knock compound sludges
26202900
- - Other
26209100
- - Containing antimony, beryllium, cadmium, chromium or their mixtures