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43 (XLII) — 1932-1933
U.S. Accident Record, 197.
U.S. Bureau on Safety, 289.
U.S. Coal Output, 151.
U.S. Coke and By-products, 39.
U.S. Safety Records, 305.
Underground Fires, 53.
Underground Haulage Accidents, 177.
Underground Lighting, 234.
Underground Workers, Recording, 77.
Unity, Plea for, 105.
Unwatering District, 158.
Ushaw Moor Explosion, 152.
Utah Coal Mining, 155.
Utilisation, Coal, Propaganda, 36, 120, 123, 137, 161, 180, 187, 217, 229, 249, 268.
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