Mine refuge
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United States of America Patent
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Mar 25, 2014
Grant Date -
Aug 30, 2007
app pub date -
Jan 19, 2007
filing date -
Feb 27, 2006
priority date (Note) -
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Abstract
A mine refuge for use in a mine includes a chamber sized and shaped for occupancy by at least one miner and adapted to be substantially sealed. An oxygen supply is installed in the chamber for supplying oxygen to the chamber. A breathable air supply is installed in the chamber for supplying a steady flow of breathable air and for positively pressurizing the chamber to inhibit entry of contaminated mine air into the chamber.
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