Quote Originally Posted by Tom Gordon View Post
It will be easy to cut a key to it because it doesnt look worn (or perhaps ever used).
You're probably spot on with that. By the nature of the thing, it was manned 24/7 I imagine for the duration of its active life.
And it was on the roof of the building, 3 storeys off the ground, so security was not too much of a worry!

They probably had a key on handover from the builder, which was most likely lost within days...