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