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54 (LIV) — 1943-1944
Photo-electric Cell, 113.
Photometer, Uses of, 23.
Pillar and Stall, 58.
Pillars, Extraction of, 106.
Pithead Baths Welfare Levy, 67.
Plan of Coal Face, 213.
Pneumatic Pick, 275.
Pneumatic Pick Face, Layout, 111.
Pneumatic Picks, Working Union Mine by, 104, 111.
Pneumonokoniosis in S. Wales Mines, 162.
Pneumonokoniosis of Coal Workers, 65.
Polygon, Area of, 7.
Ponies, 98.
Power and Efficiency, 302.
Power Driven Haulage, 236.
Power Loading on Longwall Face, 83, 103, 194.
Pressure Drop, Determination of, 86.
Pressure Survey, 191.
Preventing Haulage Accidents, 154.
Prize Competition, 9, 21, 32, 46, 57, 69, 80, 94, 105, 116, 128, 140, 152, 164, 176, 188, 200, 213, 225, 237, 248, 262, 273, 285, 297.
Prize Competition Awards, 17, 305.
Props, etc., Withdrawing and Re-setting, 202.
Proto Breathing Apparatus, 249.
Pull on Shaft Conductor, 166.
Pumps for Carbonisation Plants, 195.
Pumps, Starting, 203.
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