providing {HEAD ~ a mixer} in which the augers can be rotated at different speeds without sacrificing {TAIL ~ mixing performance} 
providing { HEAD ~ a mixer } in which the augers can be rotated at different speeds without sacrificing { TAIL ~ mixing performance }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL