Car factory, welding, hammer knocking:
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Machine engine gaining momentum
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Letter press
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Electric generator (hum)
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General noise, Work in a warehouse, loaders
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Forklift approaching
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Hydraulic activator
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Notches, print imprinted in cardboard
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Conveyor belt, Conveyor
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Forklift drives by
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Air compressor turn on, turn off
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Low frequency running engine
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Milling machine
★★★★★
