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58 (LVIII) — 1947-1948
Pearce's Water Barrel, 8.
Pemberton Colliery Memorial, 138.
Pembrokeshire Coalfield, 121.
Pennsylvania Anthracite, 124.
Percentage Extraction, 298.
Photometer, 110.
Pillar and Stall, 10, 48, 131.
Portable Self-Winding Electric Cable Reel, 123.
Power Factor Correction, 276.
Power Loaders, 112, 123, 135, 136, 152, 157, 191, 239, 258.
Power Measurement, 231.
Power to Drive Pumps, 70.
Power Transmission by Cotton Ropes, 72.
Power Transmission by Spur Wheels, 14.
Power Transmission, Ropes and Belts, 3, 60.
Pressure Greasing, 91.
Principle of Moments, 80.
Prize Competition, 9, 20, 32, 45, 57, 69, 80, 93, 105, 117, 129, 140, 153, 165, 177, 189, 201, 213, 225, 249, 261, 273, 285, 297, 309.
Prize Competition Awards, 302.
Prospecting for Coal, 41, 55.
Prospecting Work, Reporting on, 63.
Pumps for Draining Dip Workings, 79.
Pumps, Centrifugal, 62, 160, 173.
Pumps, Differential Ram, 38, 95.
Pumps, Direct-acting Ram, 30, 81.
Pumps, Lift and Force, 15.
Pumps, Reciprocating, 49, 150, 173.
Pumps, Turbine, 78, 160.
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