This sector captures extraction of minerals such as feldspar, talc, soapstone, vermiculite, diatomite, perlite, and similar industrial minerals not classified elsewhere. Each has its own HTS heading at import, so the NAICS code is primarily useful for domestic production statistics rather than as a direct guide to import classification.

Certain processed forms of minerals in this grouping — such as talc from specific origins or diatomite products — may be subject to antidumping or countervailing duty orders. Importers should check the USITC and Commerce Department remedy databases for the specific mineral and country of origin before entry.