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In page Croesyceiliog:

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The former Gwent County Hall was located here.[1] Until 2012 it provided the main administrative base for Monmouthshire County Council (even though it was outside that administrative area) and Gwent Police, and also some offices for Torfaen County Borough Council. The demolition of the premises was required as a result of concrete cancer, and took place in 2013.[2]