NAICS Code 33 Companies ... NAICS Code 331 Companies ... NAICS Code 3313 Companies ... NAICS Code 33131 Companies ... NAICS Code 331313 Companies
Alumina Refining and Primary Aluminum Production
This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina (i.e., aluminum oxide) generally from bauxite; (2) making aluminum from alumina; and/or (3) making aluminum from alumina and rolling, drawing, extruding, or casting the aluminum they make into primary forms.
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