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49 (XLIX) — 1938-1939

Dams, Concrete, 208.

Day Courses, Part Time, 161.

Declination, Change of, 334.

Deep Mine Conditions, 215.

Depth, Mining at Greater, 51.

Deputies' Order, 180.

Deputies' Reports, 405.

Deputies' Summer Meeting, 396.

Deputies, Duty of, 44.

Derailments in South Wales, 153.

Detecting Mine Gases, 69.

Detonators, 45, 76, 358.

Development of Coal Deposits, 136.

Directors, Report to, 399.

Dispersability of Dusts, 102, 138.

Distribution of Solid Fuels, 37, 196.

Double Packing, 87.

Downcast Shaft, Enlarging, 95.

Drifts, 318, 377.

Drilling Machines, 299.

Duff, Production of, 19.

Dumbreck Colliery Fire, 145, 163.

Durham Coal Prices, 312.

Dust Characteristics, 45, 102, 188, 366.

Dust Problems, 125, 293, 309, 354.

Dust Production, Reducing, 12.

Dust, Constituents of Samples, 62.

Dust, Floor, Laying, 102.

Dust, Rock Drilling, 265.

Dustproofing of Coal, 217.

Dusts, Analysis, 163.

Duties, Coal Face, 207.

Duties, Machine Men, 207.

Duties, Officials, 209.