NAICS 331410
Nonferrous Metal (except Aluminum) Smelting and Refining
This industry comprises establishments primarily engaged in (1) smelting ores into nonferrous metals and/or (2) the primary refining of nonferrous metals (except aluminum) by electrolytic methods or other processes.
Inside Nonferrous Metal (except Aluminum) Smelting and Refining
Nothing is classified below Nonferrous Metal (except Aluminum) Smelting and Refining. Its organizations are in the registry; its schema is one link above.