See in Google Maps or Earth for N49.636° E6.227° and zoom in. Go get the cargo centre. The picture in Google shows only an earlier stage of built-up. Now it's much bigger, linked to the motorway, cheap fuel and few questions asked...
No wonder it expands.
The slogan of Cargolux is: You name it, we fly it. The 'it' includes destination and cargo. Oh, I think I'm revealing State secrets here. :-)