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Tag Archive 'helium hood'

PLEASE NOTE THAT THIS ARTICLE IS 10 YEARS OLD. MUCH PROGRESS HAS BEEN MADE SINCE. FOR AN UPDATE (June 2019) GO TO THE ERGO BOOKSTORE AND SEE THE PAMPHLET (download pdf) ‘How to make your own inert gas kit’ The Vancouver Sun reported on 8 Dec 07 that the helium in an ‘exit bag’ is […]

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