Oolitic Limestone Blocks from Canada
Oolitic limestone, a calcareous building stone composed of spherical calcite grains, cut into rectangular slabs for construction and monuments. With specific gravity over 2.5, it's used in historic restoration projects. HTS 2515.20.00.00 covers this as 'other' calcareous stone, roughly trimmed.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include petrographic reports proving calcareous composition >50% calcium carbonate
• Avoid bundling with mortar or additives, as mixtures may fall under 3824 or other headings
• Check for radioactivity in certain limestone deposits; declare if applicable for safety compliance