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