The data published with NAICS code 331492 include the following SIC industries:
3313 Electrometallurgical products (pt)
3341 Secondary nonferrous metals (pt)
3399 Primary metal products, n.e.c. (pt)
This definition comes from the 1997 NAICS manual. However, for this industry, the 1997 Economic Census Manufacturing did not fully implement the conversion to NAICS. Data for NAICS industry 331492 include establishments primarily engaged in the manufacture of other nonferrous additive alloys. The NAICS definitions will be fully implemented with the 2002 Economic Census.