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  2. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    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.

  3. Two-in, two-out - Wikipedia

    en.wikipedia.org/wiki/Two-in,_two-out

    In firefighting, the policy of two-in, two-out refers to United States Occupational Safety and Health Administration (OSHA) policy 29 CFR 1910.134(g)(4)(i). [1] The respiratory protection standard requires that workers engaged in fighting interior structural fires work in a buddy system; at least two workers must enter the building together, so that they can monitor each other's whereabouts as ...

  4. Immediately dangerous to life or health - Wikipedia

    en.wikipedia.org/wiki/Immediately_dangerous_to...

    The Occupational Safety and Health Administration (OSHA) regulation (1910.134(b)) defines the term as "an atmosphere that poses an immediate threat to life, would cause irreversible adverse health effects, or would impair an individual's ability to escape from a dangerous atmosphere."

  5. Respirator assigned protection factors - Wikipedia

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

    Negative pressure full face masks; Measurement of protection factors of negative pressure full face masks with high-efficiency filters in the laboratory revealed a risk of decrease in protective properties to a small values. [27] Therefore, the use of such respirators has been limited to the values 50 or 100 PEL in the United States.

  6. Respirator - Wikipedia

    en.wikipedia.org/wiki/Respirator

    OSHA encourages the use of respirators, even if only voluntarily. OSHA advises voluntary respirator users receive a copy of 1910.134 Appendix D, as well as verify that the respirator used, be it powered-air purifying, self-contained, or facepiece-filtering, is not a potential health hazard. [158]

  7. USS Triton (SSRN-586) - Wikipedia

    en.wikipedia.org/wiki/USS_Triton_(SSRN-586)

    USS Triton (SSRN/SSN-586), the only member of her class, was a nuclear powered radar picket submarine in the United States Navy.She had the distinction of being the only Western submarine powered by two nuclear reactors.

  8. New England Wind - Wikipedia

    en.wikipedia.org/wiki/New_England_Wind

    New England Wind is a proposed offshore wind energy project developed by Avangrid.It is located approximately 20 nautical miles (37 km) south of Martha’s Vineyard and 24 nautical miles (44 km) southwest of Nantucket, Massachusetts. [1]

  9. Lemurs of Madagascar (book) - Wikipedia

    en.wikipedia.org/wiki/Lemurs_of_Madagascar_(book)

    Lemurs of Madagascar is a 2010 reference work and field guide for the lemurs of Madagascar, giving descriptions and biogeographic data for the known species.The primary contributor is Russell Mittermeier, president of Conservation International, and the cover art and illustrations are drawn by Stephen D. Nash.

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