Dines, H.G. The Metalliferous Mining Region of South-West England vol. II p.541.
Records of London and Westcountry Chamber of Mines Vol. 1 1901 p.44, 154.
Records of London and Westcountry Chamber of Mines Vol. II 1904-1908 p.97.
See also: Mineral Research Ltd. South Terras Mine. Uranium Mine.