Ha! Took me a while but soon recognised this one. The poor place has been systematically raided and is nothing to what it once was.
True story this - I was interested in buying the farm buildings and a portion of land (the mine is separate). Back then they were asking 850k. I asked for the paperwork detailing the sale and after a small amount of site records investigation I walked away - there are no fewer than 11 shafts under the gardens, barns and surrounding field.
Unless those shafts are dealt with, which means possible full demolition of the buildings, then I doubt they'll be able to sell it!

Nice pics btw. You've made it look quite pleasant there. For some reason I always got the feeling that the mine buildings were looking down on the farm in a menacing way..