In another embodiment, the invention is {HEAD ~ a suction attachment} for {TAIL ~ a swinging ladder dredge}, the attachment comprising: 
for
In another embodiment , the invention is { HEAD ~ a suction attachment } for { TAIL ~ a swinging ladder dredge } , the attachment comprising :
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH