It comes more than 20 years after a Memorandum of Understanding was signed between the 2 governments based on a shared history of industrial heritage.
Daw hyn dros 20 mlynedd ar ôl llofnodi Memorandwm Cyd-ddealltwriaeth rhwng y ddwy lywodraeth yn seiliedig ar hanes cyffredin o dreftadaeth ddiwydiannol.