Calcined Flint Powder Road Dusting from Canada
Calcined (heat-treated) flint powder for road surface dusting and stabilization. HTS 2517.10.0055 includes heat-treated powders of such stones for road metalling. Dust suppression properties.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Calcination temp records (>800°C) validate processing
• Respirable silica warnings on SDS required
• Pneumatic unloading specs for powder handling