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The Top500-Lexicon

The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.

NAICS Code 331311 Alumina Refining

The NAICS Code 331311 is described as
Alumina Refining
  • Alumina refining
  • Aluminum oxide refining

This U.S. industry comprises establishments primarily engaged in refining alumina (i.e., aluminum oxide) generally from bauxite.

Establishments primarily engaged in-
· Manufacturing aluminum oxide abrasives and refractories-are classified in Subsector 327, Nonmetallic Mineral Product Manufacturing; and
· Making aluminum from alumina-are classified in U.S. Industry 331312, Primary Aluminum Production.


It belongs to the code group
NAICS Code 33131 Alumina and Aluminum Production and Processing

To this Code "331311" belongs the sub codes
(No direct sub codes available)

The equivalent ISIC Code (Rev. 3.1) is
2720: Manufacture of basic precious and non-ferrous metals
  Métallurgie et première transformation des métaux précieux et des métaux non ferr

The nearest NACE Code (Rev. 1.1) is
27.41: Erzeugung und erste Bearbeitung von Edelmetallen - Erzeugung und erste Bearbeitung von Edelmetallen
27.41: Precious metals production - Precious metals production
27.41: Production de métaux précieux
27.41: Produzione di metalli preziosi
27.41: Produccion y primera transformacion de metales preciosos
27.41: Produktie van edele metalen
27.41: Fremstilling af ædelmetaller

The equivalent CPC Code (Rev. 1.1) is
xxxx: No Code defined

Translation of the Code description
331311: Alumina Refining

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