They are made from fibreglass with some foam core in them, as I say in an earlier post one caught fire up near Peterlee and the blades were completely consumed, all that left was some ash. As I reemebr back in about 2004 one of the big turbines (there are 9 of them) at the Nissan car plant in Sunderland was destroyed by fire leaving only the hub and mast as well.
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