A.C. Motors, Starting, 216, 228.
Accidents in Mines, 16, 41, 49, 56, 68, 107, 133, 172, 177, 185, 196, 203, 215, 217, 244, 256, 272, 279, 330, 332, 341, 348, 353, 372.
Accidents, Prevention, 76.
Accidents, Shot-firing, 298.
Accumulators, Charging, 302.
Acid Resisting Alloy, 409.
Act (1930) Criticised, 153.
Act, Mining Industry, 109.
Aerial Survey, 213.
Aged Miners' Homes, 60, 105, 135, 167, 292, 357.
Air Engines, 10, 22, 34, 54.
Air Measurement, 286.
Air Temperature in Mines, 1.
All-Steel Colliery, 203.
Amalgamations, 60, 153, 168, 180, 181, 213, 232, 267, 297, 305, 329, 344.
Ambulance Competitions, 21, 40, 112, 231, 284, 300, 331, 344, 368, 369, 392.
Analysis, Coal, 15.
Annealing and Tempering, 192.
Anthracite in Canada, 208.
Anti-breakage Coal Loader, 408.
Apparel, etc., Protective, 6, 200, 233, 416.
Appointments, 73, 105, 121, 231, 241, 249, 288, 357, 368.
Arch, Old, Discovered, 187.
Arches, Steel, 154, 174, 183.
Arcing in Closed Vessels, 251.
Arcwall Machines, 383.
Arithmetic, 109, 157.
Arley Seam, Roof Control, 277.
Auto-Transformer, 70.
Aviation Petrol, 273.
Awards, Prize Competition, 12, 28, 409.