Cardiff in making iron and later steel, brought to the sea by packhorse from Merthyr Tydfil. This was first achieved by the construction of a long canal from Merthyr (510 feet above sea-level) to the Taff Estuary at Cardiff. Eventually the Taff Vale Railway replaced the canal barges and massive marshalling yards sprang up as new docks were developed in Cardiff – all prompted by the soaring worldwide demand for coal from the South Wales valleys. At its peak, Cardiff's port area, known as Tiger Bay, became the busiest port in the world and – for some time – the world's
Cardiff Bay Barrage Cardiff possibly affecting cellars and underground electrical junctions. During the development of Cardiff Bay and of the Cardiff Bay Barrage, there was constant tension between the Cardiff Bay Development Corporation and Cardiff City Council (later Cardiff County Council). The National Assembly's Audit Committee spoke of a "fractured working relationship" between the two bodies. After the original impoundment of the waters of Cardiff Bay in November 1999 plans were mooted for a Royal inauguration of the barrage. That, it was envisaged, would be held on St David's Day 2000 to be attended by the Queen and Morgan, a vociferous opponent of