Trefnodd y Prif Weinidog Mark Drakeford gynhadleddd diogelwch pyllau glo heddiw i fynd i'r afael â diogelwch ac effeithiau amgylcheddol pyllau glo segur Cymru, ar ôl i siafft ffrwydro yn Sgiwen ac achosi llifogydd trychinebus fis diwethaf.
First Minister Mark Drakeford convened a mines safety summit today to address the safety and the environmental impacts of Wales’ disused coal mines, after a mine shaft burst in Skewen and caused catastrophic flooding  last month.