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A 2006 study found that microwaving wet sponges for two minutes (at 1000 watt power) killed 99% of coliforms, E. coli, and MS2 phages, but Bacillus cereus spores required four minutes. [14] After some fires were caused by people trying to replicate the results at home, the study's author urged people to make sure their sponges were wet before ...
Despite advancements in street sweeping technology, the mechanical broom type street sweeper accounts for approximately 90 percent of all street sweepers used in the United States today. [12] In 2018, Boschung, a Swiss street sweeper manufacturer, launched the Urban-Sweeper S2.0, the first fully electric street sweeper releasing zero emissions.
A broom is made up of two parts: the handle, which is a long cylindrical stick, and the stiff fibers lined parallel at its base. [1] The United States International Cooperation Administration made a distinction between brooms based on bristle quality. Parlor brooms are made of smooth green fibers and typically have brushes 14 to 18 inches long.
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The first upright vacuum cleaner was invented in June 1908 in North Canton, Ohio, by department store janitor and occasional inventor James Murray Spangler.Spangler was an asthmatic, and suspecting the carpet sweeper he was using at work was the cause of his ailment, he created a basic suction-sweeper by mounting an electric fan motor on a carpet sweeper and then adding a soap box and a broom ...
Parts washers were originally developed for use in automotive transmission and engine repair shops as a way to improve the function of simple soak tanks.Soak tanks are vats filled with a mixture of water and detergent, which take hours to "soften" the built-up road grime, fluids, tars and oils enough to be manually rinsed off prior to disassembly and repair.