Alun Thomas sy'n cofio'r danchwa yng nglofa'r Universal ar y 14eg o Hydref 1913. Remembering the colliery disaster of 1913. Show more
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Alun Thomas sy'n cofio'r danchwa yng nglofa'r Universal ar y 14eg o Hydref 1913. Remembering the colliery disaster of 1913. Show more