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Original Text (Annotation: SAR016800 / 1461863)

' Harbour Swing Bridge. The Harbour Swing Bridge is powered by a Bruce Peebles 440 Volts 3 Phase 8 pole 750 RPM induction motor through a gear train. There is trapdoor between the rail tracks which can be lifted by a mobile crane, although it is possible to remove it through a side door in the body of the bridge. '