According to exemplary embodiments, a device for air sifting is provided for {TAIL ~ splitting} up {HEAD ~ the remaining fraction} 
According to exemplary embodiments , a device for air sifting is provided for { TAIL ~ splitting } up { HEAD ~ the remaining fraction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD