Dines, Henry George (1956); BGS - Regional Memoirs - Metalliferous Mining Region of South West England Vol2, The; 335 pages
Richardson, P.G.; NMRS (1992); British Mining 44 - Mines of Dartmoor & the Tamar Valley after 1913; ISBN 0901450 38 3; pp.130.
Various (1920); BGS - Mineral Resources of GB (c1920s) Vols XIV, XV, XVI, XVII, XVIII - Fireclay; Arsenic & Antimony Ores; Refactory Materials, Lead & Zinc of Scotland, Rock-Salt and Brine (5 books); 777 pages