This U.S. industry comprises establishments primarily engaged in refining alumina (i.e., aluminum oxide) generally from bauxite.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 331311 | 331311 | 331311 | Alumina refining |
| 331311 | 331311 | 331311 | Aluminum oxide refining |
