1855 Muschamp & Co. 1860-1865 Muschamp & Co’s Successors 1869 George Pears & Co. 1870 Jos. Walto
Publications (1)
- (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
Blakeley (a) - 620m- Frederick's West Pit - 741m
- Middle Beechburn - 1,281m
- Hargill - 1,432m
- East Park - 1,444m
- West Beechburn - 1,458m
- Witton Park, Corving Pit - 1,556m
North Beechburn - 1,609m- Witton Park - 1,611m
- Beechburn Grange - 1,642m
- New Hargill Hill - 1,690m
- North Bitchburn - 1,965m
