Boart Miners' Diamonds for Tunneling Equipment from Canada
Irregular boart diamonds for tunnel boring machine cutters in underground mining operations. These unworked miners' diamonds fall under HTS 7102.29.0020 as other industrial variants. Their toughness excels in rock penetration tasks.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Use ISDN (International Standard Diamond Notation) for accurate grading in entries
• Segregate shipments by mine origin to leverage preferential duty programs