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40 (XL) — 1929-1930
Dangers, Coal Dust, 44.
Davies, D. Farr, 300.
Davy's Safety Contribution, 36.
Dawdon, Record, 373.
Death, 17 Years After, 330.
Death-rates, 37, 259, 283.
Decimal Fractions, 50, 66.
Deep Mining, 1, 61.
Density and S.G., 274, 292.
Depth of Shaft, Estimating, 143.
Diamond Mining, 289.
Direct-acting Pumps, 242.
Distillation, Coal, 23.
Distress, Coalfield, 8.
Drainage, Mine, Acidity, 357.
Draper, Washer, 342.
Drawing Instruments, etc., 51, 119.
Drift Measurements, 140.
Drilling Records, Conservation, 358.
Dunfermline Coal Outcrop, 293.
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