331311 Alumina Refining
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 1997 to 2002 | 2002 NAICS to 1987 SIC | 1997 Economic Census | Bridge Between 1997 NAICS and SIC |
2002 NAICS | 1997 NAICS | 1987 SIC | Corresponding Index Entries |
---|---|---|---|
331311 | 331311 | 2819 | Alumina refining |
331311 | 331311 | 2819 | Aluminum oxide refining |