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37 (XXXVII) — 1926-1927
U.S. 1926 Production, 265.
U.S. Coal Industry, 57.
U.S. Output, 71.
Unalloyed Mild Steel, 128.
Underground Conveyors, 14, 30, 58, 62, 137, 155, 161, 207, 233, 351, 353, 385, 388.
Underground Fires, 289.
Underground Haulage, 29, 84, 98, 122.
Underground Lighting, 202.
Underground Register of Men, 16.
Underground Stables, 84.
Underground Support, 242.
Undermanagers' Examinations, Notes, 395.
Under-rope, 312.
Undiscovered Coalfields, 171.
Upkeep Charges on Plant, 4.
Upton, Coalfield at, 26, 389.
Uses of Compressed Air, 117.
Utah, Coal Dust Tests, 405.
Utilisation of Coal, 155.
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