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49 (XLIX) — 1938-1939

Packing, Double, 87.

Packs, Investigation, 101.

Part Time Day Courses, 161.

Pendleton Colliery, Closing, 341.

Pensions, 5, 244.

Perimeter, Area and, 206.

Perpetual Motion, Nearest, 311.

Pioneers, Durham Miners, 160.

Pipe Joints, 358.

Pithead Baths, 11, 21, 26, 37, 53, 85, 151, 171, 181, 213, 248, 268, 281, 325, 345, 375, 393.

Pits, Sinking, 287.

Plant and Equipment, 149, 195.

Plucking in Endless Ropes, 308.

Pneumatic Electric Lighting, 145.

Pneumatic Picks, 114, 116.

Power Transmission, 175.

Praise of Pitmen, 295.

Pressure and Temperature, 231.

Prize Competition, 12, 28, 44, 61, 76, 92, 108, 124, 140, 156, 173, 188, 204, 219, 237, 252, 268, 284, 300, 316, 333, 349, 365, 380, 397.

Prize Competition Awards, 408.

Problem, Borehole, 382.

Problem, Haulage, 288.

Problem, Output, 285.

Problem, Royalty Area, 142.

Problem, Triangulation, 337.

Problem, Ventilation, 270.

Problem, Volume, 141.

Problems, Area, 16, 301.

Problems, Compressed Air, 2.

Problems, Flow of Air, 17.

Problems, Flow of Water, 34, 56, 104.

Problems, Haulage, 288, 305, 413.

Problems, Hydraulic, 34, 56, 68, 104, 118.

Problems, Industry, 139.

Problems, Pumping, 31, 132, 150, 166.

Problems, Readers', 72, 105, 196, 281, 329, 337, 358, 376, 390.

Problems, Reciprocating Pump, 150, 166.

Problems, Turbine Pump, 132.

Problems, Winding Rope, 266, 320.

Production Costs, Safety and, 227.

Properties, Carbon and Sulphur, 8.

Props, Investigation, 101.

Props, Setting, 317.

Props, Steel, 84.

Props, Withdrawal, 28, 81, 174, 252.

Protective Equipment, 1, 43, 67, 100, 123, 131, 185, 212, 248, 278, 331, 348, 386.

Proximate Analysis of Coal, 70.

Pumping, Main, 164.