1875-1890 Harton Coal Co. 1895-1946 Harton Coal Co. Ltd 1947-1982 National Coal Board
Publications (1)
- Brown, Ivor J. (1995); PDMHS (Peak District Mines Historical Society) 12-5 Sum - Note on the British Society of Mining Students 1876 to 1910, A; 3 pages (12-14)
