Grind metal on a grinding machine in a factory:
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Electric industrial motor
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Forklift drives by
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Oil pump
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Industrial exhaust fan
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Mill for grinding grain, Brewing unit
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Low frequency running engine
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Hydraulic down machine
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Lowers forks, Forklift raises
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Factory atmosphere, drone in a mine tunnel
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Postal sorting line
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On, Forklift, off, standby
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Automatic folder
★★★★★