Added to the first mixture is 1.3% to 1.7% by {HEAD ~ weight} of a second mixture of substantially 80% Al2 O3 fiber and {TAIL ~ 20% SiO2 particles}, all on a weight basis 
Added to the first mixture is 1.3 % to 1.7 % by { HEAD ~ weight } of a second mixture of substantially 80 % Al2 O3 fiber and { TAIL ~ 20 % SiO2 particles } , all on a weight basis
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH