To be fair, Bidston has been concreted several times and people end up digging through it. Must admit I'm impressed by the tenacity considering everyone knows what's down there...
I was up on the hill today just for a walk and noticed the shaft seems to have been backfilled now! I'm hoping they just put a board or something near the top and then filled, seems like a lot of work to fill an 80ft shaft! But the new 'floor' feels fairly solid, you can just about stand up in there now.
Fucking Fighters, absolute numpty. Went to the papers without even the vaguest idea what it was. 'Nuclear bunker' with a 125ft shaft?
On a lighter note, here's a rather cool old photo I managed to dig up (in potato quality sadly), showing Bidston or Tranmere under construction!