An apparatus 1, wherein the second stage receiving container comprises {HEAD ~ a feed opening}, wherein {TAIL ~ the channel} connects the discharge members of the first stage receiving containers to the feed opening, and wherein the alternating device comprises a control device configured to control the shut off members in an alternating manner 
An apparatus 1 , wherein the second stage receiving container comprises { HEAD ~ a feed opening } , wherein { TAIL ~ the channel } connects the discharge members of the first stage receiving containers to the feed opening , and wherein the alternating device comprises a control device configured to control the shut off members in an alternating manner
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH