Re: Mine Safety Subordinated to Mining Company Interests

One thing which has me curious is why mines do not station rebreathing gear underground. Some of you may be familiar with this from SCUBA--they are headset/tank affairs with chemical cleaners, allowing divers to stay down extended lengths of time because the air is actually cleaned and recycled, not exhausted and lost. Since a mine is at 1 atmosphere, it would seem to me that these devices might be able to be used in bad air situations, at least for a couple of days (assuming recharge canisters are available) and extend the possibility of surviving a collapse where the explosion is not the killer, but the lack of breathable oxygen is.
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