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  2. Dust mask - Wikipedia

    en.wikipedia.org/wiki/Dust_mask

    A notable occupational use of dust masks is in farming, where dust masks are used to avoid the effects of farmer's lung, a disease caused by the inhalation of dusts from agricultural products. [1] The toxicity mainly comes from allergy to mold in the dust, which can lead to lung damage due to the immune response, [ 7 ] as opposed to an inherent ...

  3. Respirator assigned protection factors - Wikipedia

    en.wikipedia.org/wiki/Respirator_Assigned...

    The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...

  4. Mechanical filter (respirator) - Wikipedia

    en.wikipedia.org/wiki/Mechanical_filter_(respirator)

    Infectious particles could survive on the masks for up to 24 hours after the end of use, according to studies using models of SARS-CoV-2; [58] In the COVID-19 pandemic, the US CDC recommended that if masks run short, each health care worker should be issued with five masks, one to be used per day, such that each mask spends at least five days ...

  5. Elastomeric respirator - Wikipedia

    en.wikipedia.org/wiki/Elastomeric_respirator

    Elastomeric masks must be individually fit-tested and inspected for full efficacy. [2] They may be somewhat easier to fit than filtering facepiece respirators. Older mask designs were designed only to fit young adult men of average weight and a narrow range of ethnicities; newer ones use updated anthropometry and fit more people. [5]

  6. Gas mask - Wikipedia

    en.wikipedia.org/wiki/Gas_mask

    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

  7. Bosses are posting ‘ghost jobs’ that don’t exist. Here are 3 ...

    www.aol.com/finance/bosses-posting-ghost-jobs...

    Bosses are posting ‘ghost jobs’ that don’t exist. Here are 3 ways to spot a listing that isn’t real

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