gas mask

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gas mask

gas mask face covering or device used to protect the wearer from injurious gases and other noxious materials by filtering and purifying inhaled air. In addition to military use (see chemical warfare ), gas masks are employed in mining, in industrial chemistry, and by firemen and rescue squads. The gas mask consists essentially of a face cover with two eyepieces and a mouthpiece that communicates with a canister containing a filter. The filter absorbs noxious gases as they pass through the canister to the mouth. The face cover also has a one-way outlet valve for exhaled air. See poison gas .

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"gas mask." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 26 Dec. 2009 <http://www.encyclopedia.com>.

"gas mask." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (December 26, 2009). http://www.encyclopedia.com/doc/1E1-gasmask.html

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gas mask

The Oxford Essential Dictionary of the U.S. Military | 2001 | Â© The Oxford Essential Dictionary of the U.S. Military 2001, originally published by Oxford University Press 2001. (Hide copyright information) Copyright

gas mask a protective mask used to cover a person's face as a defense against poisonous gas.

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"gas mask." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. 26 Dec. 2009 <http://www.encyclopedia.com>.

"gas mask." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. (December 26, 2009). http://www.encyclopedia.com/doc/1O63-gasmask.html

"gas mask." The Oxford Essential Dictionary of the U.S. Military. 2001. Retrieved December 26, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O63-gasmask.html

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gas mask

The Oxford Pocket Dictionary of Current English | 2009 | © The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information) Copyright

gas mask • n. a protective mask used to cover a person's face as a defense against poisonous gas.

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"gas mask." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 Dec. 2009 <http://www.encyclopedia.com>.

"gas mask." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (December 26, 2009). http://www.encyclopedia.com/doc/1O999-gasmask.html

"gas mask." The Oxford Pocket Dictionary of Current English. 2009. Retrieved December 26, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-gasmask.html

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Free newspaper and magazine articles

	Gas Masks fly off the shelves at The Counter Spy Shops. Business Wire; 9/21/2001
	Gas Masks Offered to Public by Frys Electronics and Global Data Supply. Business Wire; 11/27/2001
	SAUDI ARABIA: $40 MILLION - VOLUME OF SAUDI GAS MASKS MARKET.(Brief Article) Newspaper article from: IPR Strategic Business Information Database; 2/26/2003

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