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38 (XXXVIII) — 1927-1928

Early Coal Mining, 218.

Early Mining Literature, 181, 324, 400.

Education, Miners', 3, 7, 19, 41, 60, 67, 72, 89, 113, 184, 201, 235, 240, 267, 337, 344.

Edwinstowe Sinking, 67, 151.

Efficiency of Machine, 23.

Efficiency of Pump, 61.

Eisteddfod, Rhondda, 60.

Elam, Dr. C. F., Scholarship, 39.

Electric Battery Locomotive, 200.

Electric Gas-detecting Lamp, 247.

Electric Haulage, 89.

Electric Lamp Tests, 54.

Electric Motors, Inspection, 355.

Electrical Apparatus, Flame-proof, 7, 25, 344.

Electrical Coal-cutting Problems, 273, 415.

Electrical Inspector's Report, 138, 147.

Electrical Research Mining, 244.

Electrician, Duties, 415.

Electricity in Mines, 69, 147, 184, 291.

Electricity, Compressed Air and, 222.

Empire Mining Congress, 40, 49, 139, 199.

Empire Petroleum Requirements, 51.

Employment Exchanges, 1.

Endless Rope, 68, 78, 81, 102, 129, 146.

Engineer, What is, 219, 378.

Engineering Materials Congress, 123.

Engineering Progress, 377.

Equivalent Resistance, Mine, 326, 343, 360.

Examination Questions, 26, 36, 197, 214, 278, 362.

Examination Results, 21, 235.

Explosion, Investigating, 112.

Explosion, Mystery of, 333.

Explosions, Firedamp or Coal Dust, 120.

Explosive Mixture of Air, 203.

Explosive, Pressure Wave, 25.

Explosives Accidents, 276.

Explosives in Mines, 75, 171, 200, 276, 369.

Explosives, Gases from, 92.

Explosives, Nitrate of Ammonia and, 193.