NPRNTeitlMath O SafleArchifauDelweddauNPRN34138TeitlNant-y-Glo IronworksMath O SafleGWAITH HAEARNArchifau3Delweddau0NPRN34135TeitlEbbw Vale Steelworks, Ebbw ValeMath O SafleGWAITH DURArchifau136Delweddau61NPRN306318TeitlTrefil Quarry NorthMath O SafleCHWARELArchifau29Delweddau12NPRN400575TeitlBute Iron Works, Butetown, CardiffMath O SafleGWAITH HAEARNArchifau9Delweddau8NPRN34142TeitlTredegar Iron Works;Tredegar IronworksMath O SafleGWAITH HAEARNArchifau5Delweddau1NPRN34141TeitlSirhowy Ironworks, TredegarMath O SafleGWAITH HAEARNArchifau16Delweddau4NPRN34140TeitlBute Ironworks, RhymneyMath O SafleGWAITH HAEARNArchifau3Delweddau1
