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In page West Berlin:
"The situation with refuse was similar. The removal, burning or disposal of the ever-growing amount of West Berlin's rubbish became a costly problem, but here too an agreement was found since West Berlin would pay in Western Deutsche Marks. On 11 December 1974 East Germany and West Berlin's garbage utility company BSR signed a contract to dispose of refuse on a dump right beside the Wall in East German Groß-Ziethen (today a part of Schönefeld). An extra checkpoint, solely open for Western bin lorries (garbage trucks), was opened there. Later on, a second dump, further away, was opened in Vorketzin, a part of Ketzin.[citation needed]
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