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47 (XLVII) — 1936-1937
Gas Masks, 187.
Gas Percentages, 13.
Gas, Explosive Limits, 250.
Gases, Diffusion of, 173.
Gases, Extraneous, 108.
Gases, Mine, 92, 147.
Gases, Properties of, 44.
Gates, Face and Main, 109.
Gearing, 152.
Gemmell, D. C., Investigations, 236.
German Mine Explosion, 67.
Gorllwyn Seam Struck, 256.
Grading, Notts, and Derby Coals, 323.
Grant, Educational, 163.
Gresford Inquiry and Report, 9, 216, 248, 257, 308, 340.
Gresford Survivor, Medal, 265.
Guide Ropes and Weights, 334.
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