Factory atmosphere, drone in a mine tunnel: Listen & Download Factory atmosphere, drone in a mine tunnel .mp3 Error! Change your browser, please! ⇓ Download Industrial exhaust fan ⚠ Oil pump ⚠ Electric welding ⚠ Electric generator (hum) ⚠ Turning on, working,, Welding transformer ⚠ Noise in, Grind wood with a grinder ⚠ Stop, Lathe turning on, work ⚠ Forklift drives by ⚠ Forklift in motion ⚠ Factory Atmosphere ⚠ Mechanical lift ⚠ Steam pump ⚠ ★★★★★