Interestingly, this sign, warning about the proximity of radiation, prompted further thoughts concerning linguistics. I was once a fan of the German electro group "Kraftwerk". And, in fact, Kraftwerk made an album actually called "Radio Activity". The title song, a rather lengthy hypnotic droning thing included some sound effects which appeared to be Morse code. I assumed that those sound effects were just that - mocked up Morse like noises, but I was wrong. One day, years ago, I played the song whilst my Dad was in ear shot. He had been a radio operator, very familiar with Morse code, whilst in the Royal Navy in WW2. As the song played and the Morse "noise" proceeded, my Dad started translating it, right there and then. He stood there in my bedroom, spelling out each letter as the dots and dashes continued: "R-A-D-I-O-A-C-T-I-V-I-T-Y" and then, he also spelled out (but I can't be bothered to space it) "Discovered by Madame Curie" which happened to be the chorus of the song (and which was also sung in English and German). I remember feeling both impressed with my Dad's retained skills and also rather smug that I must be one of the few people in the world who knew that the Morse in the song was genuine. The final linguistic twist to this nurdy tale is that when I bought the album I actually bothered to find out what "Kraftwerk", the word, meant, thinking it might not mean the obvious English "Craft Work". I discovered it meant "Power Plant" and therefore when I saw "Atomkraftwerk" on the sign, I realised it meant Atomic Power Plant, or Power Station. Now there's a thing, eh?