Rhosddu Gees Engine or Venture Pit Bettisfield Colliery Fir Mill Hatton open day No.8 (Woodhead) Pit enginehouse New Haden Colliery Redacre Pit All wrapped up Wheal Betsy Richmans Enginehouse Car House Colliery Watts Shaft Engine House Cottage Caravans and Colliery Devon Colliery Beam winder Pumping Station Calcutta Pit New Engine Mine Winding Whim engine Bettisfield enginehouse Ironworks Pumping station Enginehouse Redacre Colliery Pumping station Polkey's Mill Calcutta Pit Pumping engine Westfield pumping pit