1885 Lydbrook Deep Level Colliery Co. 1890 Birchin Grove Colliery Co. Ltd 1895-1910 R. Thomas & C
Publications (1)
- Sopwith, Robert (2001); PDMHS (Peak District Mines Historical Society) 14-6 Win - Thomas Sopwith and the Forest of Dean, 1832 to 1841; 4 pages (46-49)