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40 (XL) — 1929-1930

Abandoned Mines, 96, 168.

Abercynon Ambulance Car, 376.

Accidents in Mines, 5, 7, 12, 20, 21, 24, 26, 56, 71, 87, 105, 112, 136, 137, 149, 163, 168, 171, 178, 183, 199, 200, 214, 229, 233, 241, 259, 277, 284, 293, 304, 309, 309, 311, 315, 324, 343, 345, 379.

Accidents, Reporting, 340.

Admiralty Purchases, 299.

Aerial Camera's Uses, 309.

Afterdamp, 211.

Aged Miners' Homes, 59, 71, 103, 187, 217, 241.

Aged Miners, Help for, 186.

Agents, Lancashire, 75.

Agglutinating Value of Coal, 41.

Air Distribution, 339.

Air Measurements, 50, 176, 189, 254.

Air, Drying Power, 216.

Air-crossings, 109, 403.

Algebra, 243, 267, 276.

Alignment of Roadway, 150.

Allerton Bywater Explosion, 283.

Allison, Robt., Gift, 219.

Allotted Span, Pitman, 411.

Amalgamation in Lancashire, 353.

Ambulance Competitions, 23, 36, 101, 131, 171, 283, 293, 345, 377, 392.

America's First Coal, 122.

Analysis of Road Dust, 41.

Anemometer, 238.

Angles, Construction, 165.

Anglo-Saxons and Minerals, 32.

Anthracite Prospects, 71, 101.

Apparatus, Rescue, etc., 49, 86, 98, 122, 132, 370, 414.

Apprenticeship, Miners, 34.

Arches, 194.

Archimedes, Principle of, 250.

Area, Corrected, 174, 319.

Areas, Perimeters and, 227.

Arithmetic, 13, 22, 34, 174, 318.

Atkinson, Richard, Presentation, 279.

Atkinson, Sir Wm., Death, 259.

Atmosphere, 51, 54.

Averages and Percentages, 106.