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50 (L) — 1939-1940
Machine Faces, 169, 286.
Machinery Below-ground, 257.
Managers' Examination Notes, 81, 97, 122, 337, 362, 378.
Manager's Primary Concern, 344.
Man-haulage Accidents, 273.
Man-haulage Rope Fractures, 106.
Marine Boiler Practice, 231.
Materials, 206, 368.
Mechanical Efficiency, 87.
Mechanical Gumming, 344, 356, 372.
Mechanics, 327.
Metalliferous Mines Acts, 168, 328.
Midland and Southern Report, 36.
Miner's Dial, 102, 118, 134.
Miners' Welfare, 53, 58, 87, 168, 213, 299, 357.
Mining Calculation, 270.
Mining Education, 59, 69, 281.
Mining Engineers' Opportunity, 131.
Mining Methods, 162, 207, 310.
Miscellaneous Items, 3, 5, 7, 9, 19, 20, 25, 35, 37, 44, 51, 53, 57, 67, 71, 73, 85, 100, 105, 120, 146, 149, 165, 184, 195, 203, 229, 249, 251, 263, 267, 277, 279, 295, 296, 307, 309, 315, 320, 329, 341, 355, 363, 377, 379, 388, 389, 396, 404, 405, 409, 411.
Miscellaneous Underground Accidents, 401.
Mist Projectors, 350.
Motive Column, 364.
Motor Gearing, 382.
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