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ceisiodd y llywodraeth lafur ar y pryd glirio'r etifeddiaeth tir diffaith oherwydd ei fod yn ddolur i'r llygad , yn beryglus ac yn mynd i fod yn llestair mawr i ailddatblygiad economaidd maes glo de cymru
the then labour government tried to clear up the derelict land inheritance because it was unsightly , dangerous and going to be a major drag on the economic re-development of the south wales coalfield
fodd bynnag , nid yw hynny'n golygu , pe ceid yn sydyn nifer o achosion o ddolur rhydd a chwydu neu beth bynnag y bo , a bod wardiau'n cael eu cau , na fyddai'r sefyllfa honno yn dychwelyd
however , that does not mean , if there were a sudden outbreak of diarrhoea and vomiting or whatever and wards were closed , that that situation would not return