Brewing unit, fluid drilling:
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Jamming, work, Generator, start
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Factory atmosphere, drone in a mine tunnel
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Electric generator (hum)
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Forklift approaching
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Low frequency running engine
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Welding transformer operation under load
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Gas welding
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Lowers forks, Forklift raises
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Breakdown press
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Car factory
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Crusher
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Shutdown, Compressor, start, run
★★★★★