331419: Primary Smelting and Refining of Nonferrous Metal (except
Copper and Aluminum)
This U.S. industry comprises establishments primarily engaged in (1)
making (i.e., the primary production) nonferrous metals by smelting ore
and/or (2) the primary refining of nonferrous metals by electrolytic
methods or other processes.
The data published with NAICS code 331419 include the following
3339 Primary nonferrous metals, n.e.c.