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The M50 series is certified to MIL-SPEC PRF-EA-10003. The mask design features improved performance against chemical and biological agents, toxic industrial chemicals, and nuclear fallout. The dual, low profile filters reduce weight and bulk while reducing breathing resistance by fifty percent over the M40 series mask.
[2] [3] Masks may be reusable or disposable. Some masks allow the full face to be seen by others, aiding in interpersonal communication. [1] PAPRs have low breathing resistance, unlike filtering facepiece respirators such as N95 masks. [3] A PAPR may have adjustable air flow rates for added comfort. [1]
During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.
Escaped through Japanese lines with Blackburn. Became the Commander of United States Army Forces in the Philippines - Northern Luzon, with 22,000 men by the end of the war. [1]: 226 He sought to bring the other guerrilla organizations on Luzón under his command, but was resisted by other Commanders, notably Robert Lapham.
Philippine resistance may refer to the: Morong Command, which resisted US forces during the Philippine–American War of 1899–1902, or;
In the Philippines, it aired on IBC-13 from 1989 to 1990 and on ABS-CBN from 1990 to 1991 under the title Laser Squadron Maskman and it gained popularity mainly for being the very first Super Sentai series with a full Tagalog dub. Just like in France it was also marketed as a direct sequel to Bioman, thus it was marketed as "Bioman 2: Maskman".
These masks are primarily worn during the Moriones and MassKara Festivals. [155] [156] [157] Puppet-making is a related art whose products are used in plays and festivals such as the Higantes Festival. [158] Most indigenous masks are made of wood, and gold masks (made for the dead) were common in the Visayas region before
The masks were often made of alder wood, with several coats of lacquer to give the masks gloss, and waterproof them for wearing. They were usually also painted, and often had hinges for mouth movement. A mask is used to perform ancestral rites or to drive away evil spirits by wearing a mask. [3]