Industrial Dolomite Lump for Refractories from Mexico
Lump dolomite sized 2-6 inches for refractory brick feedstock, not calcined or sintered, rectangular block form. HTS 2518.10.00.00 applies to this unsintered industrial mineral product.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Size grading certificates (lump specifications) prevent gravel misclassification under 2517
• MgO/CaO ratio assays confirm dolomite identity vs limestone substitutes
• Bulk container loading maintains 'block/slab' form factor requirement