Welsh Slate Museum, Gilfach Ddu, Llanberis, Caernarfon, Gwynedd, LL55 4TY
Rhyddhau amod 12 ar ganiatad rhif C24/0977/18/LL (Cynllun Rheoli Amgylcheddol Adeiladu (CEMP) / Discharge condition no 12 on consent ref C24/0977/18/LL (Construction Environmental Management Plan (CEMP)