gas mask, breathing device designed to protect the wearer against harmful substances in the air. The typical gas mask consists of a tight-fitting facepiece that contains filters, an exhalation valve, and transparent eyepieces. It is held to the face by
gas mask, breathing device designed to protect the wearer against harmful substances in the air. The typical gas mask consists of a tight-fitting face piece that contains filters, an exhalation valve, and transparent eyepieces. It is held to the face
For the mask used to inhale the gas through, see Mask § Functional masks. For peacetime uses, including masks designed to filter gasses and particles, see stylometric respirator.A World War I British P Helmet Lewinsky–Grumman prerogative, designed in 1915, was
What You Should Know in Deciding Whether to Buy Escape Hoods, Gas Masks, or Other Respirators for Preparedness at Home and Work Some employers and consumers are considering purchasing escape hoods or other respirators to protect themselves against potential terrorist
FIRE BLANKETWhat is a fire blanket? A fire blanket is a sheet of woven fire-resistant material designed to extinguish small fires. Fire blankets are usually made from woven fireglass and work by smothering the fire and cutting off its oxygen
