7402.00.00.00/Cement Copper Nuggets/Mexico

Cement Copper Nuggets from Mexico

Nugget-form unrefined copper recovered by cementation from acidic mine drainage waters. Classifies under HTS 7402.00.00.00 as unrefined copper requiring smelting and electrolytic refining. Typical purity 60-80% copper with iron/silica impurities.

Duty Rate — Mexico → United States

0%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Include production process certification (cementation from leach solutions) to validate unrefined status

• Provide particle size distribution; powder forms risk reclassification as copper powders under 7406

• Test for hazardous impurities (arsenic, lead); may require additional EPA declarations