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  2. List of pipeline accidents in the United States (1900–1949)

    en.wikipedia.org/wiki/List_of_pipeline_accidents...

    May – Three teachers and a plumber were injured by a gas explosion at Saint Michael's Roman Catholic Church parish school in Pittsburgh, Pennsylvania. [4]October – In Boston, Massachusetts, five women narrowly escaped being burned alive after a leaking gas meter exploded in the basement of their three-story tenement, starting a fire that ascended through the stairwells and drove them out ...

  3. Albert Butz - Wikipedia

    en.wikipedia.org/wiki/Albert_Butz

    The damper flapper could control a coal fire furnace by operating the furnace damper from a thermostat. In 1885, Butz decided to patent his heat controller and establish a company to make and sell it. It is believed that Mendenhall urged Butz to patent, manufacture, and sell the damper flapper.

  4. Infiltration (HVAC) - Wikipedia

    en.wikipedia.org/wiki/Infiltration_(HVAC)

    Smoke candles and blower-door tests can help identify less-than-obvious leaks. The Weatherization article describes methods for energy savings further. If infiltration is reduced below 0.35 ACH, it is recommended that mechanical ventilation (typically an exhaust fan or heat recovery ventilation ) be implemented.

  5. Steve Guttenberg Goes Unrecognized as He Comes to the Rescue ...

    www.aol.com/steve-guttenberg-goes-unrecognized...

    Steve Guttenberg hit the ground running to help people impacted by the fires in Pacific Palisades — and he was almost unrecognizable. The flames first began around 10:30 a.m. local time on ...

  6. Nozzle and flapper - Wikipedia

    en.wikipedia.org/wiki/Nozzle_and_flapper

    The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.

  7. The Only Way To Prevent Bagged Salads and Greens From Rotting

    www.aol.com/only-way-prevent-bagged-salads...

    Look in your fridge. Do you have a bag of soggy, leafy greens tucked somewhere in the produce bin? This happens to me too. Often. To make longer-lasting bagged salads and greens, a Reddit thread ...

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