| 2519.90.00 | 13 | Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure. - Magnesium oxide, not less than 94% pure: - Caustic burned | KGM | | |
| 2519.90.00 | 19 | Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure. - Magnesium oxide, not less than 94% pure: - Other | KGM | | |
| 2519.90.00 | 90 | Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure. - Other: - Other | KGM | | |
| 25.20 | | Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders. | | | |
| 2520.10.00 | 00 | Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders. | KGM | Free | CCCT, LDCT |
| 2520.20.00 | 00 | Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders. | TNE | Free | CCCT, LDCT |
| 2523.29.00 | 00 | Portland cement: - Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers. | TNE | Free | CCCT, LDCT |
| 2523.90.00 | 10 | Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers. - Masonry cement | TNE | | |
| 2523.90.00 | 20 | Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers. - Oilwell cement | TNE | | |
| 2523.90.00 | 30 | Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers. - Slag cement | TNE | | |
| 2523.90.00 | 40 | Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers. - Supersulphated cement | TNE | | |
| 2526.20.00 | | Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc. | TNE | Free | CCCT, LDCT |
| 2526.20.00 | 10 | Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc. - Talc of a particle size not exceeding 20 microns | TNE | | |
| 2526.20.00 | 90 | Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc. - Other | TNE | | |
| 2529.22.00 | 00 | Fluorspar: - Feldspar; leucite; nepheline and nepheline syenite; fluorspar. | TNE | Free | CCCT, LDCT |
| 2529.30.00 | 00 | Feldspar; leucite; nepheline and nepheline syenite; fluorspar. | TNE | Free | CCCT, LDCT |
| 2603.00.00 | 81 | Copper ores and concentrates. - Precious metal content: - Silver content | GRM | | |
| 2603.00.00 | 82 | Copper ores and concentrates. - Precious metal content: - Gold content | GRM | | |
| 2603.00.00 | 90 | Copper ores and concentrates. - Other | KGM | | |
| 2604.00.00 | | Nickel ores and concentrates. | KGM | Free | CCCT, LDCT |
| 2528.00.00 | 00 | Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight. | KGM | Free | CCCT, LDCT |
| 2620.11.00 | 00 | Slag, ash and residues (other than from the manufacture of iron or steel) containing metals, arsenic or their compounds. - Containing mainly zinc: - Hard zinc spelter | KGM | Free | CCCT, LDCT |
| 2620.21.00 | 00 | Slag, ash and residues (other than from the manufacture of iron or steel) containing metals, arsenic or their compounds. - Containing mainly lead: - Leaded gasoline sludges and leaded anti-knock compound sludges | KGM | Free | CCCT, LDCT |
| 2620.60.00 | 00 | Slag, ash and residues (other than from the manufacture of iron or steel) containing metals, arsenic or their compounds. - 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 | KGM | Free | CCCT, LDCT |
| 2620.91.00 | 00 | Slag, ash and residues (other than from the manufacture of iron or steel) containing metals, arsenic or their compounds. - Other: - Containing antimony, beryllium, cadmium, chromium or their mixtures | KGM | Free | CCCT, LDCT |
Harmonized Tariff Schedule of the Canada inquiry: aircraft+parts
