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51 (LI) — 1940-1941

A.C. Motors, 187.

A.R.P. in Mines, 100, 165.

Abercrave, New Seam, 64.

Absenteeism and Accidents, 344.

Accident Lost-time Analysis, 215.

Accidents and Their Prevention, 1, 17, 292.

Accidents in 1940, 292, 321, 346, 368, 384, 410.

Accidents in Mines, 21, 59, 106, 184, 192, 197, 213, 226, 273, 310, 362, 391.

Aged Miners' Homes, 307.

Air for Analysis, 174.

Air H.P., 97.

Air Leakage, 319.

Air Losses and Remedies, 236.

Air Measurements, 411.

Air, Weight of, 24.

Air-crossings, 381.

Alternating Currents, 98, 260, 282.

Ambulance Competitions, 34, 117.

Ammonia, 9.

Analysis of Coal, 146.

Analysis, Dust, 127.

Angles in Traverse, 41.

Answers to Correspondents, 51, 67, 88, 116, 166, 347.

Anthracite for Producer Gas, 409.

Anthracite, Oxidation of, 112, 340.

Apparatus, Dust Collecting, 354.

Apparatus, Electrical, 222.

Appointments, 9, 55, 117, 123, 153, 199, 213, 216, 231.

Arc Lamps, 98, 218.

Arches, Steel, and Spontaneous Combustion, 373.

Areas, Determination, 23.

Armature, Actions and Reactions, 230.

Armoured Cables, 30.

Ash, Coal, 218, 227.

Atkinson, F. S., Agent, 216.

Atmosphere, 44, 77.

Atmospheres at Great Depths, 183.