Lithographic press:
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Forklift raises, lowers forks
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Letter press
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Grind metal on a grinding machine in a
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Forklift, standby, on, off
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Hydraulic activator
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Room noise, Glass bottles on a conveyor line
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Spectrograph
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Loaders, general noise, Work in a warehouse
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Printing press
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Working machine engine
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Low frequency running engine
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Postal sorting line
★★★★★