Signal for lunch at the factory:
-
Welding transformer operation under load
-
Working machine engine
-
Welding transformer, working,, turning on
-
Power Plant Water Pumps
-
Low frequency running engine
-
Breakdown press
-
Compressor industry
-
Automatic telephone switch
-
Factory atmosphere, drone in a mine tunnel
-
Newspaper press
-
Brewing unit, mill for grinding grain
-
General noise, Factory work
★★★★★