The atmosphere of the factory, rattling metal objects:
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Letter press
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Low frequency running engine
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Hydraulic activator
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Book press
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Welding, hammer knocking, Car factory
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Welding transformer operation under load
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Work in a warehouse, loaders, general noise
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Hydraulic machine up
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Bottling plant
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Turning on, working,, Welding transformer
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Steam pump
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Mill for grinding grain, Brewing unit
★★★★★