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53 (LIII) — 1942-1943
Earth Temperature, 157.
Economisers and Superheaters, 58.
Electric Circuit, 214, 299.
Electric Current, Heating Effect, 97.
Electric Currents Compared, 286.
Electrical Hazards, Mechanised Mining, 1.
Electrical Instruments, 34.
Electrical Terms, 311.
Electricity, 90, 97.
Equivalent Orifice, 272.
Examination Notes, Surveyors, 187.
Examinations, Board for, 63, 207.
Examinations, Colliery Officials, 113.
Examinations, Managers' Notes, 193, 205, 218.
Examinations, Temporary Changes, 39.
Exploders, 203.
Explosion, Murton Colliery, 5.
Explosion, William Pit, 16.
Explosions, Causes of, 166.
Explosives, 208, 224.
Explosives and Blasting, 137.
Explosives, Rare Accidents, 60.
Extinguishers, Surface Use, 28.
Extracting Seams, 108.
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