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  2. Mine Safety and Health Administration - Wikipedia

    en.wikipedia.org/wiki/Mine_Safety_and_Health...

    The Mine Safety and Health Administration (MSHA) (/ ˈ ɛ m ʃ ə /) is a large agency of the United States Department of Labor which administers the provisions of the Federal Mine Safety and Health Act of 1977 (Mine Act) to enforce compliance with mandatory safety and health standards as a means to eliminate fatal accidents, to reduce the frequency and severity of nonfatal accidents, to ...

  3. Safety lamp - Wikipedia

    en.wikipedia.org/wiki/Safety_lamp

    A newer light source, the light-emitting diode (LED), has advantages for safety lamps, mainly higher efficiency providing much longer illumination time from the same battery. Batteries too have improved and provide more energy per unit weight; LEDs in conjunction with batteries such as rechargeable lithium units provide much better performance ...

  4. Electrical equipment in hazardous areas - Wikipedia

    en.wikipedia.org/wiki/Electrical_equipment_in...

    A light switch may cause a small, harmless spark when switched on or off. In an ordinary household this is of no concern, but if a flammable atmosphere is present, the arc might start an explosion. In many industrial, commercial, and scientific settings, the presence of such an atmosphere is a common, or at least commonly possible, occurrence.

  5. Federal Mine Safety and Health Act of 1977 - Wikipedia

    en.wikipedia.org/wiki/Federal_Mine_Safety_and...

    The Federal Mine Safety and Health Act of 1977 (Public Law 95-164) amended the Coal Mine Safety and Health Act of 1969.It can be found in the United States Code under Title 30, Mineral Lands and Mining, Chapter 22, Mine Safety and Health.

  6. Light up Your Workshop or Garage With One of These Editor ...

    www.aol.com/lifestyle/led-shop-lights-best...

    LED Shop Lights 6-Pack. This six-pack of LED shop lights includes all the mounting hardware you need to hang them from your shop or garage ceiling, whether you want to mount them or suspend them ...

  7. NEMA enclosure types - Wikipedia

    en.wikipedia.org/wiki/NEMA_enclosure_types

    General-purpose. Protects against dust, light, and indirect splashing but is not dust-tight; primarily prevents contact with live parts; used indoors and under normal atmospheric conditions. 2: Drip-tight. Similar to Type 1 but with addition of drip shields; used where condensation may be severe (as in cooling and laundry rooms). 3: Weather ...

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