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