Jamie2k9 - if you look at Streetview past the yard, the current imagery shows a timber train and
what looks like a small crane unloading. Perhaps whether trains are unloaded in town or at Belview depends on whether a container train is at the Port? In respect to keeping lorry traffic down in the city, unloading for SmartPly at Belview seems a better call (since
the factory is located within the Port district) but as usual that will require someone other than IE/government to pay for the capital spend to add trackage even if improved signalling allowed 2-3 trains at once within the port yard.