Laser welding:
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Hammer knocking, Car factory, welding
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Air compressor, air blow
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Factory work, general noise
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Work in a warehouse, loaders, general noise
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Hydraulic machine up
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Small centrifuge
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Hydraulic down machine
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Vibrosieve at the factory
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Work, jamming, Generator, start
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Compressor industry
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Mechanical lift
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Electric generator (hum)
★★★★★