Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
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Страница v
... mines in Lancashire , Durham , Northumberland , Devon , Anglesea , and Scotland ; and has visited many mines abroad in France , Germany , Austria , and in the United States of America . He is not only acquainted with coal - mines , but ...
... mines in Lancashire , Durham , Northumberland , Devon , Anglesea , and Scotland ; and has visited many mines abroad in France , Germany , Austria , and in the United States of America . He is not only acquainted with coal - mines , but ...
Страница xvi
... mine 182 257. Section of gold - mine ( North Wales ) 182 258. Method of mining tin ( Cornish tin - mine ) 183 259. Section of gold - veins 184 260. Plan of salt - mine 184 261. Penrhyn Slate - quarry 184 262 . section of quarry and ...
... mine 182 257. Section of gold - mine ( North Wales ) 182 258. Method of mining tin ( Cornish tin - mine ) 183 259. Section of gold - veins 184 260. Plan of salt - mine 184 261. Penrhyn Slate - quarry 184 262 . section of quarry and ...
Страница xxvii
... mines at work in the South Wales Coalfield is 603 . 4. The Lancashire and Cheshire Coal - field is separated from the Midland Coal - field by the Pennine Chain anticlinal , and at one time the two fields were undoubtedly connected . On ...
... mines at work in the South Wales Coalfield is 603 . 4. The Lancashire and Cheshire Coal - field is separated from the Midland Coal - field by the Pennine Chain anticlinal , and at one time the two fields were undoubtedly connected . On ...
Страница xxviii
... mines in the North Wales Coal - field is 65 . 6. The North Staffordshire Coal - field is bounded on the east by Lower Carboniferous rocks , but the coal measures extend to the west and south under Permian rocks . A great thickness of ...
... mines in the North Wales Coal - field is 65 . 6. The North Staffordshire Coal - field is bounded on the east by Lower Carboniferous rocks , but the coal measures extend to the west and south under Permian rocks . A great thickness of ...
Страница xxix
... mines , including an outlying coal - field at Nailsea , is about 30 . 12. Shrewsbury , Coalbrookdale , and Forest of Wyre Coal - fields . The two latter coal - fields have easterly extensions under the newer rocks , possibly connecting ...
... mines , including an outlying coal - field at Nailsea , is about 30 . 12. Shrewsbury , Coalbrookdale , and Forest of Wyre Coal - fields . The two latter coal - fields have easterly extensions under the newer rocks , possibly connecting ...
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Често срещани думи и фрази
air-current air-road anemometer bars bore-hole boring bottom brattice brick cage capstan cent centre coal measures coal-dust Coal-field colliery compressed conductors cubic foot cylinder Davy lamp depth detonator dirt distance drill driven drum electric engine fire-damp flame flange foot foot-pounds friction fulminate of mercury furnace gauze ground gunpowder haulage heat hole hoppet inches in diameter incline iron ironstone lamp length lifted load lower machine Millstone Grit mineral mines minute outcrop pass Permian pillars pipe piston pit-bottom plate props pulley pump road rocks rods roof rope rule safety-lamp sandstone screw seam of coal shaft shale shown in Fig shows side sinking sometimes speed spur-gearing square inch stalls steam steel stone strata stroke surface temperature thick timber tons tubbing tube upcast valves vein velocity vertical waggons Warwickshire water-gauge wedge weight wheel wire yards
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