Avalanche airbag practice rig using compressed air from an external tank, pull the trigger to get used to it.
tank
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Ski Touring Airbag Tech — How Much do those Cylinders (and batteries) Weigh?
by Lou Dawsonby Lou DawsonReview of ski touring avalanche airbag backpack cylinders and batteries, all sorts of cartridges and tanks hold air, argon, and other compressed gas.
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Adapting a water tank to use as a liner in wood fired hot tub for backcountry ski chalet tiny house.