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
History Thermal Earmuffs were invented by Chester Greenwood of Farmington, Maine in 1873, when he was 15.[1] He reportedly conceived the idea while ice skating, and asked his grandmother to sew tufts of fur between loops of wire.[2] His patent
This article is about paper dust masks. For respirators worn over the nose and mouth, see N95 respirator.A half-face dust mask A dust mask is a flexible paper pad held over the nose and mouth by elastic or rubber straps
A fire blanket is a safety device designed to extinguish incipient (starting) fires. It consists of a sheet of a fire retardant material that is placed over a fire in order to smother it. Small fire blankets, such as for
