Trips undertaken without prior permission from Chatsworth Estates are unauthorised. No formal agreement yet in place to administer access to either of these sites. Grid reference for Boothlea Mine is SK163 728, with description & survey dated 1976 in SUSS Journal, Vol 2, No 5. Boothlea Mine lies in Wye Valley SSSI.
(1971) , Bull. P.D.M.H.S. Vol.4. No.6., pp.413-416., Peak District Mines Historical Society
(1972) , Bull. P.D.M.H.S. Vol.5. No.1., pp.54-60. Survey., Peak District Mines Historical Society
(1980) , Bull. P.D.M.H.S. Vol.7. No.6., pp.342-344. Survey., Peak District Mines Historical Society
(2001) , C.C.P.C. N/L No.69., pp.4-7., Crewe Caving and Potholing Club
(2010) , Caves of the Peak District, p. 308, DCA