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    Digital image of photo of 19th century examples of precipitation pits at Mona Mine - P Craddock, 1988Opsiynau lawrlwytho a prynu
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    NPRNTeitlMath O SafleArchifauDelweddauNPRN300167TeitlParys Mountain: Mona Mine, AmlwchMath O SafleMWYNGLAWDD COPRArchifau5Delweddau1