This classification applies to the processing of ore for the purpose of recovering metals and minerals, including but not limited to gold, silver, nickel, graphite, coke, zinc and iron.
Smelting, sintering, refining or alloying operations shall be classified as 1438, Smelting, Sintering, Refining or Alloying.
|Shown below is the previously published phraseology and footnote||Effective Date|
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