Although coal mine workings occur in Anglesey, Pembrokeshire and Powys our method did not highlight any opportunities and thus area reports have not been produced.
Er bod gweithfeydd glo i’w cael yn Ynys Môn, Sir Benfro a Phowys, ni wnaeth ein dull ddynodi unrhyw gyfleoedd ac felly nid oes adroddiadau ardal wedi cael eu cynhyrchu.