{HEAD ~ The availability} of the waste dust contents for soil fertilization was demonstrated by subjecting {TAIL ~ the material} to multiple digestions with boiling distilled water 
demonstrated by subjecting
{ HEAD ~ The availability } of the waste dust contents for soil fertilization was demonstrated by subjecting { TAIL ~ the material } to multiple digestions with boiling distilled water
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH