the last gamma spectral detector used on thermal measure values (radionuclides) , is also used on the gas separation industries...we can see here at Portugal, one of them Linde, that was some time ago, stolen at Kasaquistan, this list, is basically the gas separation utility that the companies make

https://www.europages.pt/e…/Portugal/gases%20medicinais.html

• GASIN - GASES INDUSTRIAIS, S.A.
  Fornecedor de: Gases medicinais | Gases comprimidos liquefeitos
  PORTUGAL - Perafita

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• LINDE SOGAS, LDA.
  Fornecedor de: Gases medicinais | GPL | Agentes de refrigeração - gás | Gases comprimidos liquefeitos
  PORTUGAL - Lisboa

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• AIR LIQUIDE MEDICINAL,S.A.
  Fornecedor de: Gases medicinais | Gases comprimidos liquefeitos