Factory atmosphere, drone in a mine tunnel: Listen & Download Factory atmosphere, drone in a mine tunnel .mp3 Error! Change your browser, please! ⇓ Download Forklift in motion ⚠ Box making machine ⚠ Power station generator ⚠ Forklift approaching ⚠ Low frequency running engine ⚠ Bottling plant ⚠ Forklift truck moving away ⚠ Industrial exhaust fan ⚠ Hydraulic activator ⚠ Letter press ⚠ Gas welding ⚠ General noise, Work in a warehouse, loaders ⚠ ★★★★★