Compressor, start, run, shutdown:
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Welding, Car factory, hammer knocking
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Power Plant Water Pumps
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Bottling plant
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Crusher
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Printing press
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Electric generator (hum)
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Air blow, Air compressor
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General noise, Work in a warehouse, loaders
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Canning machine
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Mill for grinding grain, Brewing unit
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Room noise, Glass bottles on a conveyor line
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Working machine engine
★★★★★