{TAIL ~ A fibrous filter element} for trapping diesel engine exhaust particulates comprises a mass of coiled wire of flattened cross section compacted into {HEAD ~ a small passage gas pervious body} 
{ TAIL ~ A fibrous filter element } for trapping diesel engine exhaust particulates comprises a mass of coiled wire of flattened cross section compacted into { HEAD ~ a small passage gas pervious body }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD