NAICS 331410: Vendors that win government contracts in this category are 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.


  • Antimony Refining, Primary
  • Bars Made In Primary Copper Smelting And Refining Mills
  • Beryllium Refining, Primary
  • Bismuth Refining, Primary
  • Blister Copper Manufacturing
  • Cadmium Refining, Primary

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