Grind wood with a grinder, noise in production:
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Air blow, Air compressor
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Mill for grinding grain, Brewing unit
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Lithographic press
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General noise, Factory work
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Heidelberian sorting printer
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Rattling, The atmosphere of the factory
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Postal sorting line
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Circular knitting machine
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Electric generator (hum)
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Hydraulic pump
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Working machine engine
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Turning on, working,, Welding transformer
★★★★★