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40 (XL) — 1929-1930
Ignition of Firedamp, 72.
Inclines, Self-acting, 322, 402.
India, Coal Mining, 252.
Inductance and Power Factor, 5.
Industry, Problem of, 9, 12, 43, 54, 55, 58, 59, 71, 80, 81, 87, 90, 91, 101, 105, 113, 121, 135, 136, 139, 155, 165, 180, 203, 233, 240, 245, 279, 293, 309, 341, 344, 353, 355, 376, 379, 380, 385, 389.
Inflammability, Coal Dust, 202.
Injector, Giffard, 239.
Inspection Areas, 8, 19.
Inspection, Colliery, 302, 416.
Inspector, Miners', Northumberland, 321.
Inspectors' Reports, 74, 107, 120, 137, 162, 178, 194, 214.
Institution of Mining Engineers, 1.
Instruments, Surveying, 10.
Intensive Mining, 7.
Inverse Squarss, Law, 278.
Iron and Steel Institute, 58, 232, 313.
Iron Ore Output, 147, 392.
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