Portable fresh air station
inside look
Outside of the box
The Portable Fresh Air Bay is a completely powerless, inflatable refuge chamber that deploys rapidly to provide 96 hours of breathable air to miners trapped underground. High pressure compressed air cylinders inflate and fill the Bay with fresh air. Medical grade oxygen cylinders and a CO2 scrubber maintain fresh, breathable air inside the chamber. I think this one is a good product but must be reachable for all the miners = it only works if you have many inside of the mine.
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