said proportion includes a proportion in the range of {HEAD ~ 15% glass} and {TAIL ~ talc} 
said proportion includes a proportion in the range of { HEAD ~ 15 % glass } and { TAIL ~ talc }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL