Grind metal on a grinding machine in a factory:
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Work, Lathe turning on, stop
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Milling machine
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Steam pump
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Electric welding
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Turn off, Air compressor turn on
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Signal for lunch at the factory
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Small centrifuge
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The atmosphere of the factory, rattling
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Hydraulic machine up
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Noise in, Grind wood with a grinder
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Room noise, Glass bottles on a conveyor line
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Factory work, general noise
★★★★★