I happened to drive by when these windmills had their yearly services
and check-up. Fortunately we had our APS camera with us at the time and
of course we snapped few shots.
These all are scanned photos which you can enlarge by clicking image.
Operating windmill, see my red BMW for size reference
Blades removed - my girlfriend 162cm (5'4'') standing by
Another view of blades with 162cm (5'4'') reference standing by
Closer look at blades
Not so good shot of interior of one of the blades. Total material thickness
at the root of the blade was approx. 100mm (~4in)
More about this "WindPark" as it is called (all in finnish i'm afraid...)