An apparatus 1, wherein the second stage receiving container comprises a feed opening, wherein the channel connects {HEAD ~ the discharge members} of {TAIL ~ 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 
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An apparatus 1 , wherein the second stage receiving container comprises a feed opening , wherein the channel connects { HEAD ~ the discharge members } of { TAIL ~ 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 OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL 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