| http://www.w3.org/ns/prov#value | - abitable for mammalian life, in particular human life, by introducing into the confined space an effective amount of an extinguishing gas comprising carbon dioxide and an inert gas to lower the oxygen content of the atmosphere of the confined space to a concentration in the range of 8 to 15 percent by volume oxygen such that the atmosphere in the confined space will not support combustion but will
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