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A World War I British P Helmet, c. 1915 Zelinsky–Kummant protivogaz, designed in 1915, was one of the first modern-type full-head protection gas masks with a detachable filter and eyelet glasses, shown here worn by U.S. Army soldier (USAWC photo) Indian muleteers and mule wearing gas masks, France, February 21, 1940 A Polish SzM-41M KF gas mask, used from the 1950s through to the 1980s
3M Company (originally the ... Minnesota, making their first sale on June 13, 1902. [1] ... The N95 respirator mask was developed by 3M and approved in 1972. [114]
The M50 series mask entered service in December 2006. [3] [4] In July 2014, Avon Protection received a contract to supply 135,000 M50s for $33 million. [5]In March 2016, it was announced that 166,623 M50s were purchased by the Department of Defense (DOD) under a $42 million contract.
Gas masks are extensively used in mining and construction. They are used against paint vapors, solvents, silica dust, and other hazardous particles and gasses. [5] Masons and carpenters use them against dusts and adhesives. [5]: Table2-1 Elastomeric respirators may be used to protect against welding fumes.
An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.
M17 gas mask; M40 field protective mask; M50 Joint Service General Purpose Mask; MCU-2/P protective mask
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