Developments at the turn of the 20th century - An enlargement of a section of postcard dating from c.1908. The swing bridge across the locks between the basin and main dock can be clearly seen. The bridge is pivoted from the far side of the lock and rotates neatly into the recess in the quay wall to permit ships to pass through. The entrance to the subway (opened in 1900) is clear as are two accumulator towers which provided the instantaneous hydraulic power for the operation of the coal tips, swing bridge and lock gates. [000] [001]