Well! Call me undereducated! :) What I didn't know, I sure learned there. Seems they have got all the moves or at least some of the words. I don't think I have ever seen one of your buildings with messy all-talk, no good pictures on the walls. A different set of people, definitely urbex wannabes.
It would really surprise me if that place was from the 1800's - it looks like if the original building was, somewhere along the line it was rebuilt to more modern standards.
I'm glad you showed her off, but, sorry you didn't get anything of interest to you. But, you never know... this could have been the one!
LOL, could be there is too many slang guttural Britishism's in all that mumbo-jumbo! I wouldn't call them explorers, more dumb kids with nothing better to do.