Ajay,I think they are to lower miners into coal mines. Basically a fortified lift.
Lots of coal mines in the area, further to the south they started out as drift mines as the coal seams were at the surface, especially around the Shildon area, but up around Newcastle they are deep mines running out under the North Sea.
Thanks for sharing the link KK, I did some work at the Vickers yard on the Tyne in the late 90s early 2000s
In the pic of the torpedo getting fired this pic is looking back at roughly where it was fired from, roughly where the bluey grey tower is