But, at most, this should result in a carbon content of {TAIL ~ 0.06 percent} by weight in {HEAD ~ the powder mixture} 
But , at most , this should result in a carbon content of { TAIL ~ 0.06 percent } by weight in { HEAD ~ the powder mixture }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD