Nope. Definitly oxygen tanks. Good thought tho. Was my first thought too. That is NOT a bad suggestion. Moonshine. Hmmm. The oxygen could be used to make the flame hotter. If those are evaporators next to the propane tank then that is likely the answer.
could the tanks be CO2? if yes, it's a grow operation, or a bootleg distillery.
tread carefully, this way, there be dragons.
Nope. Definitly oxygen tanks. Good thought tho. Was my first thought too. That is NOT a bad suggestion. Moonshine. Hmmm. The oxygen could be used to make the flame hotter. If those are evaporators next to the propane tank then that is likely the answer.