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gas mask |
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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 chemical warfare, employment in war of incendiaries, poison gases , and other chemical substances. Ancient armies attacking or defending fortified cities threw burning oil and fireballs. A primitive type of flamethrower was employed as early as the 5th cent. B.C. ..... Click the link for more information. ), 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 poison gas, any of various gases sometimes used in warfare or riot control because of their poisonous or corrosive nature. These gases may be roughly grouped according to the portal of entry into the body and their physiological effects. ..... Click the link for more information. . How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Other items found included a black trench coat, a gas mask, large black leather boots and pictures of Columbine shooters Eric Harris and Dylan Klebold, Oklahoma City bomber Timothy McVeigh, Charles Manson and ``other domestic terrorists,'' Owen said. I was also outfitted with the full "battle rattle" of Desert Camouflage Uniforms, body armor, gas mask and chemical oversuit. Haddix would receive training in how to wear a gas mask and shoot a 9mm pistol. |
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