On 4 September, we wrote to the Secretary of State for Education calling on an urgent meeting of the cross-government Reinforced Autoclaved Aerated Concrete Working Group.
Ar 4 Medi, fe wnaethom ysgrifennu at yr Ysgrifennydd Gwladol dros Addysg yn galw am gyfarfod brys o’r gweithgor trawslywodraethol ar Goncrit Awyredig Awtoclafiedig Cyfnerth.