... equipped with 40-120 buckets,5-25m in dredging depth.50-300m3/h in grass output,30- ... equipped with 40-120 buckets,5-25m in dredging depth.50-300m3/h in grass output,30- ... ...3. usage: gold mining ,salt mining, mining ,dredging,hard riverbed exploitation. ModelBucket No.Pontoon(LxW)mDredging Depth( ... be used in gold mining,salt mining,mining,dredging,hard riverbed exploitation,etc.in 5-20m water depth ...