Alumina Refining & Primary Aluminum Production
Key Figures
Figures are published for NAICS 331313 directly.
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Official definition
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. Establishments in this industry may make primary aluminum or aluminum-based alloys from alumina.
Source: US Census Bureau, 2017 NAICS Definitions. Public domain.
Which code does this activity belong in?
Establishments in 331313 refine bauxite into alumina or produce primary aluminum from alumina. The key boundary distinguishes primary aluminum production from secondary smelting; 331314 covers recovering aluminum from scrap or dross, while 331313 covers making aluminum from virgin alumina. When 331313 establishments roll, draw, extrude, or cast their own primary aluminum into basic forms, this integrated activity remains within 331313, but separate downstream rolling of purchased aluminum into sheet, plate, foil, or other shapes is classified in 331315 or 331318.