Yellow Excavator Works with Bucket to Clear Mud Sludge and Debris from the bottom of the Drained River-2

mud dredging dredging large excavator yellow excavator backhoe mechanical excavator excavator operator excavator bucket iron excavator cleaning river mechanical digger drained river mud machine deep mud digger equipment rental regeneration project clean river river bottom repair work sludge waterways river workmen canal debris sinking ground polluted water dirty powerful engine nature contract rubble caterpillar littery safely drive beach banks grab arm driving man impure business