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42 (XLII) — 1931-1932

Safety Appliances, Haulage, 121.

Safety Conference, Birmingham, 315, 340.

Safety Conference, Buxton, 10.

Safety Conference, Glasgow, 49.

Safety Conference, Manchester, 151, 169.

Safety Conference, Nottingham, 211, 231, 241.

Safety Conference, Swansea, 275, 293.

Safety-lamps v. Naked Lights, 65.

Safety-lamps, Flame, 166.

Sandwich System, 405.

Scholarships, 72, 133, 176, 372.

Science and Safe Mining, 216, 226, 246, 262, 274, 292, 306, 328, 338, 360, 374, 390.

Scottish Miners, 199.

Screens, Sizing, 99.

Secretary for Mines, 72, 155.

Self-heating of Coal, 14.

Separation Doors, 349.

Series A.C. Circuits, 200.

Shaft Pillars, 118, 130.

Shaft Sinking, 70, 126.

Shaft, Enlarging, 271.

Shafts, Lining, 45.

Shafts, Sealing Off, 399.

Shaker Chute Mining, 199.

Sheffield Society's Magazine, 32.

Sheffield's Mining Department, 388, 405.

Shot-firer's Duties, 237.

Shot-firing, 170, 271, 298, 299, 300.

Shunts, Ammeter, 40.

Signalling, Electric, 56.

Signalling, Loud Speaker, 8.

Sinking by Cementation, 194.

Sinking by Freezing, 46.

Sinnatt, Dr., Research Director, 208.

Siphon, 77.

Sirocco Fan, 240.

Sizing of Slack, 124.

Slip Rings, 191.

Slurry Washing Plants, 403.

Smokeless Fuel, 116.

Soot in Atmosphere, 10.

Sparking and Gas Ignitions, 28.

Spontaneous Combustion, 48.

Stall Road-head Accidents, 188.

Steam Pipe Ranges, 204.

Steam Plant Efficiency, 96.

Steam Users' Problems, 34.

Steam, Story of, 208.

Steel Arches, 181, 301.

Steel Supports, 210.

Steel v. Wood, 205.

Stemming, Effect of, 67.

Stone Dust, 255, 276.

Stone-dusting Appliances, 157.

Stoppings, 335.

Storage Battery, 112.

Stowage of Goaf, 183.

Submarine Mining, 104.

Subsidence, 309, 382.

Substitutes for Explosives, 44.

Successful Competitor, 76.

Sugar and Mortar, 379.

Supervision, Accident, 8.

Support, Types of, 174.

Supports in Longwall, 148.

Survey of Coal Seams, 11.

Surveying, 15, 61, 126, 205, 207, 221, 253, 302, 315, 413.

Surveying Instrument, 113.

Surveys, Gas, 42.

Sutton Manor Colliery, 118.

Swansea College Extensions, 232.