1884-1901 Henry Shield & James Beadle Shield 1902-1912 James B. Shield 1913 Alfred H. Shield 1914-1922 Randolph Shield 1877-1883 London Lead Co.
Publications (2)
- Fairbairn, Raymond A.; NMRS (2005); British Mining 77 - Mines of Upper Teesdale, The; ISBN 0901450 59 6; p.43
- Gill, M.C. & Burt, R.; NMRS (2003); British Mining 72 - Mines of Yorkshire, The; ISBN 0901450 56 1; pp.260,325
