Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste:
Part of: 26 — Ores, slag and ash
H003743 · 2007-08-06 — Revocation of Headquarters Ruling Letter (HQ) 955742, dated April 7, 1994; Classification of micro silica sand.
This letter is to inform you that the Bureau of Customs and Border Protection (CBP) has reconsidered Headquarters Ruling Letter (HQ) 955742, issued to you on behalf of your client, Microcell Australia, on April 7, 1994, concerning the classification under the Harmonized Tariff Schedule of the United States (HTSUS) of micro silica sand. The micro silica sand was classified under heading 2620, HTSUS, which provided for “[a]sh and residues (other than from the manufacture of iron or steel) containing metals or metal compounds.” We have reviewed that ruling and found it to be in error.…
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