Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
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Страница v
... North Wales , and Staffordshire . He has also from time to time inspected mines in Lancashire , Durham , Northumberland , Devon , Anglesea , and Scotland ; and has visited many mines abroad in France , Germany , Austria , and in the ...
... North Wales , and Staffordshire . He has also from time to time inspected mines in Lancashire , Durham , Northumberland , Devon , Anglesea , and Scotland ; and has visited many mines abroad in France , Germany , Austria , and in the ...
Страница xii
... north to south , showing three faults . 56. Section from east to west , showing effect of fault 32 333333 33 34 34 35 35 35 wwwww . 37 38 38 39 39 40 4I 41 4I 60 . 58. Section on line x y , Fig . 57 , showing hills , valleys , etc. 59 ...
... north to south , showing three faults . 56. Section from east to west , showing effect of fault 32 333333 33 34 34 35 35 35 wwwww . 37 38 38 39 39 40 4I 41 4I 60 . 58. Section on line x y , Fig . 57 , showing hills , valleys , etc. 59 ...
Страница xv
... . Cleavage planes and joints 226 . 227 . 161 161 Pillar - and - stall ( Cheshire ) Pillar - and - stall ( North Staffordshire ) 228. Longwall 162 163 164 FIGURE 229. Section of working place PAGE 164 230. Cross LIST OF FIGURES . XV.
... . Cleavage planes and joints 226 . 227 . 161 161 Pillar - and - stall ( Cheshire ) Pillar - and - stall ( North Staffordshire ) 228. Longwall 162 163 164 FIGURE 229. Section of working place PAGE 164 230. Cross LIST OF FIGURES . XV.
Страница xvi
... ( 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 shafts 185 263. Ffestiniog Slate - 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 shafts 185 263. Ffestiniog Slate - mine ...
Страница xxv
... North of Scotland has at the surface pre- carboniferous rocks ( Silurian ) , and these being lower in the scale of deposition than the carboniferous system ( see p . 9 ) , coal will not be found . The south - eastern counties of England ...
... North of Scotland has at the surface pre- carboniferous rocks ( Silurian ) , and these being lower in the scale of deposition than the carboniferous system ( see p . 9 ) , coal will not be found . The south - eastern counties of England ...
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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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