Converter Slag from Copper Pyrometallurgy with Gold from Mexico
Slag from Peirce-Smith converters in copper production, mainly copper sulfides and oxides with gold traces for recovery. Under 2620.30.00.50 as copper-predominant with gold content, for metal/compound manufacture. Not from iron/steel per hierarchy.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Ensure slag cooling certificates to confirm non-hazardous state for shipping
• Differentiate from ore fines via processing history docs
• Monitor for alternative claims if gold assay exceeds typical thresholds