Title :
Stray electric currents in coal mines
Author_Institution :
Bureau of Mines, Birmingham, Ala.
fDate :
5/1/1949 12:00:00 AM
Abstract :
THE HAZARDS represented by stray electric currents in coal mines and earth strata have been a major problem since electric shot-firing methods were introduced some years ago. The accident records of the mining industry are replete with instances of premature explosions and shot-firing accidents of various kinds for which the only logical explanation is stray electric currents in the earth.
Keywords :
Coal mining; Current; Degradation; Discharges (electric); Earth; Insulation life; Lightning;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1949.6444768
