The Prince of Wales will visit Tata Steel's steelworks, meet employees and members of the community, before visiting the Blast Furnace Control Room and unveiling a plaque to commemorate the completion of the new Blast Furnace Number Four.
The Prince said Wales should be unbelievable proud of what has been achieved here.
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The tree was blown down in a gale in February after standing for more than 200 years.
Aberdaron recorded wind speeds of 70mph this morning. A warning is issued covering the whole of Wales.