Never got out to Hargrove myself but I've heard a few people mention it over the years, mostly locals who used to cut through that area at night. The shadow figure thing keeps coming up specifically - not just a vague presence but something that actually moved and seemed aware of whoever was watching it. That detail sticks with me.
Did it seem to have any particular shape to it? Some of these mill locations have a really distinct type of activity, probably from the machinery accidents and general misery of that kind of work environment. Residual vs intelligent is the big question with shadow figures like that.
Gutted they tore it down before anyone got a proper investigation in. Anyone manage to get any footage or EVP recordings while it was still standing?