{HEAD ~ A device} for {TAIL ~ the quantitative analysis} of debris 1, wherein said conveyor belt is provided with containment sidewalls , integral thereto and placed on both sides along their whole length, and defines an upper or debris collection surface and a lower surface 
for
{ HEAD ~ A device } for { TAIL ~ the quantitative analysis } of debris 1 , wherein said conveyor belt is provided with containment sidewalls , integral thereto and placed on both sides along their whole length , and defines an upper or debris collection surface and a lower surface
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