Fresh air bases
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....in fresh air, as near to the irrespirable zone or zones based on safety consideration, every such base shall, if possible be connected by telephone,- (i) if the base is below ground to the su....
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....all be a rescue trained person; (ii) a spare team with rescue apparatus, ready for immediate service; (iii) one or more reviving apparatus, oxygen revivers and like other apparatus, ....
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