Signal for lunch at the factory:
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Factory atmosphere, drone in a mine tunnel
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Working machine engine
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Electric welding
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Hydraulic pump
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Robotic assembly line
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Welding transformer operation under load
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Grind metal on a grinding machine in a
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Power station generator
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Room noise, Glass bottles on a conveyor line
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Welding, hammer knocking, Car factory
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Hydraulic machine up
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Car factory
★★★★★