1 Gases, in compressed, liquid or dissolved form, namely, industrial application gases in the nature of protective and active gases, welding, burning, cutting and shielding gases, process, treatment and operating gases, namely, nitrogen, oxygen, saturated and unsaturated hydrocarbon gases, hydrocarbon compounds, noble gases, namely, helium, neon, argon, krypton, and xenon, hydrogen, carbon dioxide, carbon monoxide, and specialty gases, namely, nitrogen, helium, carbon dioxide, synthetic air, hydrogen argon, oxygen and gas mixtures consisting of hydrogen in nitrogen, methane in argon, hydrogen in helium, methane in argon and other gas mixtures of all of the aforesaid gases; cryogenic liquid atmospheric gases for industrial, commercial, and scientific purposes in chilling and freezing