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Facial hair in the military. During the 19th century, soldiers and officers sported various type of moustaches, goatees, beards or sideburns. Pictured: Coldstream Guards returning from the Crimean War. Facial hair in the military has been at various times common, prohibited, or an integral part of the uniform .
Similar mask with generic flat disk filters. Elastomeric respirators, also called reusable air-purifying respirators, [1] seal to the face with elastomeric material, which may be a natural or synthetic rubber. They are generally reusable. Full-face versions of elastomeric respirators seal better and protect the eyes.
Respirator. White, disposable cup N95 filtering facepiece respirator. A half-face elastomeric air-purifying respirator. This kind of respirator is reusable, with the filters being replaced periodically. A respirator is a device designed to protect the wearer from inhaling hazardous atmospheres including lead fumes, vapours, gases and ...
John Quincy Adams (1825–1829) was the first U.S. president to have notable facial hair, with long sideburns. [2] But the first major departure from the tradition of clean-shaven chief executives was Abraham Lincoln (1861–1865), [3] [4] [5] who was supposedly (and famously) influenced by a letter received from an eleven-year-old girl named Grace Bedell, to start growing a beard to improve ...
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An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 classification of air filtration, meaning that it filters at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers [1] under 42 CFR Part 84, effective July 10, 1995. [2]
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