General   (General discussion, talk about anything.)

For many years, I wondered how they managed to build the brickwork which constituted the shaft lining, as you can only build upwards, you can't build downwards.

Of course, I now know that they do build upwards upon a supporting ring, a section at a time. ie they prop the brickwork, lower the ring, and then build up another section to meet the one above.

I suppose it is obvious when you think about it, but for some time, I had wondered.