Re pinner quarry ,Rossendale Council have secured the quarry. In rawtenstall Library there is a plan and survey ,done prior to securing in I think around 2007 ,there was was rumoured links to coal seams but no evidence found in survey ! I also have recent pics of Pinner/chapel hill and bonfire hill if anybody wants copies please drop me a mail .Thanks for info re bonfire hill , I found the hole at the northern end of the site and asssumed it "in the absence of equipment on the day" that it was still accessable. I would think only the use of a boat and non arrival of prickly farmer ,would reveal the extent of chapel hill,s workings ,As there seems to be some interest in chapel hill mine ,just a little more info. The accessable are at the top of hurst lane ,on the burnley side of a double old spoil mound. After passing last farm building,"right of way goes right through it" bear left to point where path starts to decend. then over a wired double gate and follow left had spoil mound round ,till you come to a small quarry face . two entrances visible , both linked . the most accessable to the right had an old bed frame over it ,workings run NE in direction of scout !,but as previously mentioned are full of water, there is no subsidence visible above the workings ,so could be promising.
At the other bigger spoil mound is a larger quarry face , I don't remember any openings in that area "1990's"