When this iron sulfide is added in a large amount to treat a fly ash or soil containing heavy metals in a high concentration, {HEAD ~ the waste} thus treated has {TAIL ~ too high a water content} and is hence difficult to handle thereafter 
When this iron sulfide is added in a large amount to treat a fly ash or soil containing heavy metals in a high concentration , { HEAD ~ the waste } thus treated has { TAIL ~ too high a water content } and is hence difficult to handle thereafter
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH