Under the Dodd-Frank Act, SEC-reporting companies that use tantalum in their products must conduct supply-chain due diligence to determine whether it originates from conflict-affected regions of the Democratic Republic of Congo or adjoining countries. Importers supplying such companies are often asked to provide smelter and origin documentation consistent with the Responsible Minerals Initiative (RMI) framework.

Crucibles are specifically named in 810391 and are classified there regardless of their end use. Any other fabricated tantalum article that is not a crucible and does not fall under the unwrought or waste subheadings defaults to the residual 810399 subheading.