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39 (XXXIX) — 1928-1929
A.C. to D.C., Conversion, 371.
Abandoned Mines, 200.
Abandoned Mines and Water, 311.
Abroad, Coal Conditions, 24.
Absenteeism in Mines, 73, 341.
Accidents in Mines, 4, 17, 23, 72, 91, 115, 139, 172, 219, 225, 227, 233, 243, 248, 249, 267, 272, 277, 284, 305, 315, 327, 329, 340, 373, 411.
Accumulators, Charging, 54.
Act, Notice of Accidents, 204.
Actors, Miners' Turn, 385.
Adjustable Pit Props, 111.
Aerial Ropeway, 192.
Africa, North, Coal, 80.
African Union, South, Minerals, 149.
Age and Accident Frequency, 411.
Aged Miners' Homes, 4, 188, 315, 369, 391, 403.
Air Compressors, 111.
Air Losses in Mine Entries, 81.
Air, Adiabatic Expansion, 195.
Air, Mine, 166, 184, 292, 354.
Air-flow Resistance, 267.
Alternator Tests, 143.
Amalgamations, Mine, 136, 139, 247, 265, 277, 295, 305, 331.
Ambulance, 9, 172, 199, 229, 247, 311, 369, 391.
Analysis of Coal, 82, 185.
Anemometer, Kata Used as, 3.
Angles, Oblique, Measurement, 87.
Answers to Correspondents, 23.
Anthracite, Pennsylvania, 42.
Anthracitisation of Coal, 403.
Areas, Correction of, 230.
Arithmetic, 14, 29, 45, 222, 237, 253, 332, 400.
Armstrong College, 108, 328, 362, 408.
Art, Miners in, 212.
Assay of Coal, 277.
Australian Coal Industry, 264.
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