Hi guys, thanks for clearing up the ladder's position, it is a fair number of years since I have been in this flat, and the way that you are explaining it's situation, would suggest to me that you have opened up another hopper way,(there were several), into this flat.
As, the old ladder seemed to move around, I would suggest, that you tie a chain to it and anchor the chain on a Rawlbolt, well fixed into the wall.
Talking about this flat, raises another point, which I could never, explain, perhaps a Peter & Nick, might know?
In the 80's, Earby( who else!), dug out a passageway in the flat, which at the time was known as the Proud's extension, into a large stoped area.
The question, I have always wondered, what is the name of this Vein working?