Dams, Construction of, 400.
Davy, Work of, 25.
Dealing with Water, 61.
Decomposition of Coal, 325.
Deep Working, 159.
Deepening Shafts, 320.
Denaby Surface Plant, 195.
Derbyshire Mining Education, 123.
Detectors, Firedamp, 323, 344, 362.
Detonators, Electrical, 153.
Diffusion of Gases, 362.
Dip Faults, Tunnels through, 370.
Dip of Strata, 50, 70.
Disasters, Ventilation After, 19.
Duties of Collier, 237.
Duties, Fireman's, 109.