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  2. Ultrasonic cleaning - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_cleaning

    At the top of the machine there is a refrigeration coil. Fluid condenses on the coil and descends into the upper tank. The upper tank eventually overflows and relatively clean fluid runs into the work tank where the cleaning takes place. The purchase price is higher than simpler machines, but such machines may be more economical in the long run.

  3. Parts washer - Wikipedia

    en.wikipedia.org/wiki/Parts_washer

    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.

  4. Occupational safety and health - Wikipedia

    en.wikipedia.org/wiki/Occupational_safety_and_health

    Falls are also a common cause of occupational injuries and fatalities, especially in construction, extraction, transportation, healthcare, and building cleaning and maintenance. [28] Machines have moving parts, sharp edges, hot surfaces and other hazards with the potential to crush, burn, cut, shear, stab or otherwise strike or wound workers if ...

  5. Labor Dept. says Tennessee firm employed minors to clean meat ...

    www.aol.com/news/tennessee-firm-illegally...

    Another industrial slaughterhouse cleaner has been accused by the U.S. Labor Department of illegally employing children as young as 13 to clean dangerous equipment on overnight shifts, according ...

  6. Washing machine - Wikipedia

    en.wikipedia.org/wiki/Washing_machine

    Early machines would spin at 300 rpm and, because of lack of any mechanical suspension, would often shake and vibrate. In 1976, most front-loading washing machines spun at around 700 RPM, or less. [citation needed] Today, most machines spin at 1000–1600 RPM. Most machines have variable speeds, ranging 300–2000 RPM depending on the machine.

  7. Worker dies getting caught in machine that 3M Company knew ...

    www.aol.com/worker-dies-getting-caught-machine...

    A 3M Company employee was helping set up a plastic extrusion line when they became caught in the machine’s rotating rollers and died, according to federal authorities.. The 3M Company reported ...