Dines, H.G. The Metalliferous Mining Region of South-West England, Vol. I, p.49. Vol. II p.577.
C. Reid et al 1910. The Geology of the Country around Padstow and Camelford. Memoirs of the Geological Survey p.103.
Tregelles
Dines, H.G. The Metalliferous Mining Region of South-West England, Vol. I, p.49. Vol. II p.577.
C. Reid et al 1910. The Geology of the Country around Padstow and Camelford. Memoirs of the Geological Survey p.103.