In my lifetime certainly, but I wasn’t particularly aware of it at the time (being quite young, and not living in Wales). I think we were a bit more aware of Trawsfynydd, being “atomic” and more likely to catch our attention.
I posted in the thread about TV programs that ‘Tri Tryweryn’ is on S4C Clic and is about the three who made a little bang on the site!!!
p.s. I don’t recall anyone blowing up Trawsfynydd!!!
Almost missed this:
Rhaglen o Ganolfan Dŵr Gwyn Genedlaethol Y Bala bum deg mlynedd ers agor Llyn Celyn. Dylan presents from Bala’s National White Water Centre to mark 50 years of Llyn Celyn.