| 2508.30.00 | 00 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.10.00 | 00 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.60.00 | 00 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.40.00 | | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.40.00 | 10 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Common blue clay and other ball clays | KGM | | |
| 2508.40.00 | 91 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Other: - Of a kind used for animal litter | KGM | | |
| 2508.40.00 | 99 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Other: - Other | KGM | | |
| 2508.50.00 | | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.50.00 | 10 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Andalusite | KGM | | |
| 2508.50.00 | 20 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Kyanite | KGM | | |
| 2508.50.00 | 30 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Sillimanite | KGM | | |
| 2508.70.00 | | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. | KGM | Free | CCCT, LDCT |
| 2508.70.00 | 10 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Chamotte earth | KGM | | |
| 2508.70.00 | 20 | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
- Dinas earth | KGM | | |
Harmonized Tariff Schedule of the Canada inquiry: aircraft+parts
