After 1857 with Trelawney.
Publications (3)
- Collins, J.H. (1912); Observations of the West of England Mining Region; 753 pages
- Dewey, Henry (1921); BGS - Mineral Resources of GB (c1920s) Vol XXI - Lead, Silver and Zinc: Cornwall, Devon, Somerset; 88 pages
- Shambrook, H.R.; NMRS (1982); British Mining 20 - Caradon & Phoenix Mining Area, The; ISBN 0 901450 22 7; pp.1.


