Construction, cement loading, drum rotation: Listen & Download Drum rotation, Construction, cement loading .mp3 Error! Change your browser, please! ⇓ Download Leaves, The bulldozer starts ⚠ Construction of buildings, driving piles, ⚠ Digging in the tool box ⚠ Excavator digs a hole ⚠ Removing a nail from a tree ⚠ Hammer and chisel, blows on concrete ⚠ Waits, Bobcat Loader Starts Up ⚠ Metal file ⚠ Bulldozer working ⚠ Planer, manual planing ⚠ Electric planer ⚠ Drill machine ⚠ ★★★★★