| 2513 | | Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: | | | | |
| 2513.20 | | Emery, natural corundum, natural garnet and other natural abrasives: | | | | |
| 2517 | | Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast; shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: | | | | |
| 2517.20.00 | 00 | Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10 | t | Free | | 30% |
| 2518 | | Dolomite whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; dolomite ramming mix: | | | | |
| 2518.10.00 | 00 | Dolomite, not calcined or sintered | t | Free | | Free |
| 2518.20.00 | 00 | Calcined or sintered dolomite | t | 3% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 30% |
| 2519 | | 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: | | | | |
| 2519.10.00 | 00 | Natural magnesium carbonate (magnesite) | t | Free | | $10.33/t |
| 2519.90.10 | 00 | Fused magnesia and dead-burned (sintered) magnesia | kg | Free | | 1.7¡é/kg |
| 2519.90.20 | 00 | Caustic calcined magnesite | t | Free | | $20.70/t |
| 2520 | | Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders: | | | | |
| 2523 | | Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: | | | | |
| 2524.90.00 | 10 | Amosite | t | | | |
| 2530.20 | | Kieserite, epsom salts (natural magnesium sulfates): | | | | |
| 2603.00.00 | 40 | Silver content | Ag g | | | |
| 2607.00.00 | 40 | Silver content | Ag g | | | |
| 2608.00.00 | 40 | Silver content | Ag g | | | |
| 2616.10.00 | | Silver ores and concentrates | | 0.8¡é/kg on lead content | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 8.8¡é/kg on copper content + 3.3¡é/kg on lead content + 3.7¡é/kg on zinc content |
| 2616.10.00 | 40 | Silver content | Ag g | | | |
| 2620 | | Slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds: | | | | |
| 2620.19.60 | 40 | Silver content | Ag g | | | |
| 2620.21.00 | 40 | Silver content | Ag g | | | |
| 2620.29.00 | 40 | Silver content | Ag g | | | |
| 2620.30.00 | 40 | Silver content | Ag g | | | |
