Mine refuge
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United States of America Patent
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Aug 30, 2011
Grant Date -
Aug 21, 2008
app pub date -
Apr 21, 2008
filing date -
Feb 27, 2006
priority date (Note) -
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Abstract
A mine refuge for use in a mine includes a chamber having an interior space sized and shaped for occupancy by at least one person. An oxygen supply is installed in the chamber for supplying oxygen to the chamber. A mask is operatively connected to the oxygen supply and is adapted for donning by the person to supply oxygen to the person. In some embodiments, an air supply in addition to the oxygen supply is provided.
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