Yellow Excavator Works with Bucket to Clear Mud Sludge and Debris from the Bottom of the Drained River

mud dredging excavator moves dredging land reclamation excavator works drained river backhoe regeneration project excavators ground construction equipment deep mud yellow excavator excavator bucket digger mud machine large excavator sludge equipment rental river bottom timelapse polluted excavator operator clean river are working dirty canal debris hard job sweepings rubble river flow sink water sinking breaking angle rubbish sweeps iron arm contract littery banks safely trash business impure grab caterpillar