Car factory, welding, hammer knocking:
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Signal for lunch at the factory
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Loaders, general noise, Work in a warehouse
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Low frequency running engine
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Bottling plant
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Automatic telephone switch
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Spinning machine
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Factory Atmosphere
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Hydraulic pump
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Lathe turning on, stop, work
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Vibrosieve at the factory
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Brewing unit, fluid drilling
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Industrial exhaust fan
★★★★★