Electric generator (hum):
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Turn off, Air compressor turn on
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Milling machine
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Laser welding
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Factory work, general noise
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Drone in a mine tunnel, Factory atmosphere
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Newspaper press
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Working,, Welding transformer, turning on
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Grind metal on a grinding machine in a
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Brewing unit, fluid drilling
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Box making machine
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Electric welding
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Power Plant Water Pumps
★★★★★
