Grind metal on a grinding machine in a factory: Listen & Download Grind metal on a grinding machine in a .mp3 Error! Change your browser, please! ⇓ Download Hydraulic machine up ⚠ Postal sorting line ⚠ Conveyor belt, Conveyor ⚠ Forklift approaching ⚠ Compressor, run, shutdown, start ⚠ Oil pump ⚠ Working machine engine ⚠ Grind metal on a grinding machine in a ⚠ Electric generator (hum) ⚠ Air blow, Air compressor ⚠ Start, Generator, work, jamming ⚠ Forklift truck moving away ⚠ ★★★★★