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41 (XLI) — 1930-1931
Walker, Sir William, Death, 51.
Waste Workings, Boring, 49.
Water Blast, 274.
Water Cooling, 351.
Water Gas, 353.
Water Hammer, 30.
Water Softening, 384.
Water-gauge, Principle, 141.
Water-tube Boilers, 304.
Wath Main Explosion, 188.
Wedging Curbs, 16.
Welding, Boiler Repairs, 181.
Welfare Fund, 12, 43, 72, 102, 118, 145, 147, 188, 217, 251, 267, 297, 301, 331, 336, 347, 348, 353, 355, 377, 384, 389, 392, 401, 403.
Welfare Fund Administration, 416.
Welsh Gold Mining, 89.
Welsh Miners' Coat of Arms, 299.
Wernbwll Colliery Explosion, 44.
Weston's Differential Block, 138.
Wheel and Compound Axle, 114.
Whitwood Mining College, 81.
Will, Retired Miner's, 361.
Winch, Single-purchase, 146.
Winding Engines, 112.
Winding Rope's Construction, 144.
Wire Ropes, 41.
Withdrawing Timber, 153, 413.
Woodland, From Mine to, 268.
Workmen's Compensation, 251.
Worksop County College, 124.
World's Coal Resources, 173.
Wynn, Golden Wedding, 361.
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