Excavators are working with Buckets to Clear Mud Sludge and Debris from the Bottom of the Drained River

land reclamation excavator moves regeneration project ground excavator works mud dredging backhoe deep mud construction equipment equipment rental dredging drained river yellow excavator timelapse digger large excavator mud machine reclamation excavator bucket rubble excavator operator mechanical digger sludge river bottom debris improvement workmen polluted contract dirty breaking angle iron arm river cleaning river banks waterways clean river canal river flow powerful engine safely sink littery business impure grab