Mine refuge

  • US 7,533,942 B2
  • Filed: 01/19/2007
  • Issued: 05/19/2009
  • Est. Priority Date: 02/27/2006
  • Status: Active Grant
First Claim
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1. A mine refuge for use in a mine comprising:

  • a chamber sized and shaped for occupancy by at least one miner;

    an oxygen supply adapted to be installed in the chamber for supplying oxygen to the chamber; and

    a carbon dioxide reduction system adapted to be installed in the chamber for reducing carbon dioxide in the chamber, the carbon dioxide reduction system being operable in the mine without an electrical power source,said carbon dioxide reduction system comprising a carbon dioxide absorbent material, a blower, and a source of pressurized gas for operating the blower to move air in the chamber to said carbon dioxide absorbent material for absorption of carbon dioxide in the air.

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