Thus, although a particular waste material may have little or no utility in the month or year in which it is located at the waste disposal site and stacked in {HEAD ~ the pyramid} of {TAIL ~ containers}, its contents may become quite valuable at some future time as a charge stock or intermediate material in a manufacturing facility making useful products of the future 
of
Thus , although a particular waste material may have little or no utility in the month or year in which it is located at the waste disposal site and stacked in { HEAD ~ the pyramid } of { TAIL ~ containers } , its contents may become quite valuable at some future time as a charge stock or intermediate material in a manufacturing facility making useful products of the future
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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH