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50 (L) — 1939-1940

Accident and Silicosis Prevention, 177.

Accidents Due to Electricity, 150.

Accidents in Mines, 10, 33, 74, 99, 135, 171, 202, 235, 267, 308, 339, 380.

Accidents, Notices of, 12.

Accidents, Prevention, 105, 209, 225, 243, 273, 289, 314, 321, 346, 356, 369, 385.

Accidents, Roadhead, 62.

Accidents, Shaft, 398.

Accidents, Summary, 21, 44, 52.

Aged Miners' Homes, 41.

Air Column, Weight, 304.

Air Compression, 200.

Air Conditioning, Deep Mine, 292.

Air Contamination, 155.

Air Distribution, 42.

Air Measurements, 285.

Air Temperatures, Deep Mine, 148.

Air-borne Dust, 130.

Air-crossings, 331.

Airways, Resistance of, 355.

Amalgamations, 21, 67.

Ambulance Competitions, 184, 203, 231, 320, 357.

Anemometer, 333.

Anthracite Mine Fires, 107.

Appointments, 147.

Artificial Sunbaths, 67.

Astley Green Inquiry, 44, 73.

Atmosphere, 76.