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--
|No change 1997 to 2002||2002 NAICS to 1987 SIC||1997Economic Census||Bridge Between 1997 NAICS and SIC|
|Corresponding Index Entries|
|331311||331311||2819||Aluminum oxide refining|