Grind metal on a grinding machine in a factory:
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Standby, on, off, Forklift
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Dry cleaning
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Low frequency running engine
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Stamping press
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Hammer knocking, welding, Car factory
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Noise in, Grind wood with a grinder
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General noise, Factory work
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Box making machine
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Hydraulic activator
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Electric generator (hum)
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Grind metal on a grinding machine in a
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Newspaper press
★★★★★