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41 (XLI) — 1930-1931

Cable, Securing, 270.

Cage Guides, 31.

Calorific Value, 176.

Camsell, Dr., Medallist, 369.

Canada's Coal Needs, 124.

Cap Lamps, Plea for, 132.

Capping Ropes, 10.

Carbon Dioxide, 129.

Carbon Monoxide, 116, 125, 396, 402.

Carbonisation, Effect of, 58.

Castleford Colliery Explosion, 69.

Central Scheme, 113.

Chemistry, 350.

Chock Tests, 55.

Circulation of Air, 134, 155.

Coal Cleaning and Washing, 6, 21, 24, 37, 65, 84, 98, 305.

Coal Cleaning Experiments, 32.

Coal Dust, 302.

Coal Fires, 249.

Coal Mines Act, 48, 155, 176, 183, 187, 290, 319.

Coal Research, 49.

Coal Tar Oil, 403.

Coal, Nomenclature, 183.

Coal-cutter Picks, 168.

Coal-cutters, 17, 215.

Coal-getter's Duties, 13.

Coke as Fuel, 117, 295.

Coke Breeze, 147.

Coke Ovens, Partington, 244.

Coke Tests, 195, 379.

Colliers' Responsibility, 164.

Colliery Alterations, 60.

Commercial Department, Colliery, 186, 202.

Commutation, 228.

Competition, Prize, 12, 29, 45, 61, 77, 92, 109, 125, 141, 157, 173, 189, 205, 221, 237, 253, 269, 285, 302, 318, 332, 349, 365, 380, 397.

Competition, Prize, Awards, 404.

Competitor, Successful, 39.

Compressed Air Plant Efficiency, 292.

Compressed Air v. Electricity, 20.

Concrete Supports, 145.

Constitution of Coal, 379.

Conveyors, Underground, 161, 215, 295.

Coopers Hill Memorial Prize, 301.

Correlation of Coal Seams, 89.

Correspondence, 32, 134, 154, 307, 344.

Coxon, Wm, Sketch, 39.

Curve, Setting Out, 287.