especially the White ones in the frame above, with LINDE on them... Compressed air?
https://www.flickr.com/photos/offshoreradio/52827417640/in/photostream/[/b]
White cylinders are probably balloon gas which is a mix of helium and air. While pure helium is lighter, so potentially better at lifting, balloons are made of a porus material which leaks, so they mix it with air so as to stay aloft longer. Oddly, the balloon gas I got for a balloon aerial years ago was in a brown cylinder. The project I was working on, literally never got off the ground 
The colour in the pic is a bit off but I guess the other cylinders were acetylene. Paul A will know.
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Laser Radio Very Very Intresting - Paul G August 15, 2024, 12:34 am
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