The manufacturing, mixing or blending of gasses, including but not limited to oxygen, acetylene, arsine and carbonic acid gas, dry ice and liquefied hydrogen and nitrogen shall be classified as 4635, Oxygen or Hydrogen Mfg.
The manufacture of solid propellant rocket fuel shall be classified as 4771(2), Rocket Propellant Mfg.
|Shown below is the previously published phraseology and footnote||Effective Date|
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