Factory atmosphere, drone in a mine tunnel: Listen & Download Drone in a mine tunnel, Factory atmosphere .mp3 Error! Change your browser, please! ⇓ Download Factory work, general noise ⚠ Postal sorting line ⚠ Print imprinted in cardboard, Notches ⚠ Laser welding ⚠ Mechanical lift ⚠ Automatic folder ⚠ Brewing unit, fluid drilling ⚠ Vibrosieve at the factory ⚠ Hydraulic down machine ⚠ Box making machine ⚠ Dry cleaning ⚠ Compressor industry ⚠ ★★★★★