Electrical earthingin coal mines.
Contributors: National Coal Board. Headquarters Technical Department.
Series: Information handbook -- IH/1
Publisher: National Coal Board, Headquarters Technical Department
Published: 1986
Place of publication: Burton-on-Trent (Ashby Rd., Stanhope Bretby, Burton-on-Trent, Staffs, DE15 0QD)
Language: eng
Number of pages: 45
Subjects: Coal mines and mining -- Electric equipment.; Electric currents -- Grounding.
Notes: Includes index.