Right so I've been waiting for someone to post about this place. I grew up near there and went through that mill more times than I can count as a teenager, and yeah, the shadow figures are absolutely a thing. Not just at the edges of your vision either - I mean full on shapes moving through the main floor area like they've got somewhere to be.
What gets me is how consistent the reports are. You'd expect people to describe all sorts if it was just pareidolia or whatever, but almost everyone says the same thing - tall, moving against the light, no real detail. That kind of pattern is hard to dismiss isn't it.
Has anyone actually done a proper vigil there with equipment? I'd love to know if there are any thermal readings or if its just visual. Also curious whether anyone has picked up on anything psychically because that building has a very particular feeling to it that I can't quite put into words.