Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
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Страница v
... fix the price of all kinds of labour at collieries . He has also worked as a miner both at coal - getting and sinking . This has enabled him the more highly to appreciate the labours and writings of other engineers , to whose ...
... fix the price of all kinds of labour at collieries . He has also worked as a miner both at coal - getting and sinking . This has enabled him the more highly to appreciate the labours and writings of other engineers , to whose ...
Страница xxiii
... ( fixed ) 542. Cage - catches 433 434 543. Water - winding tank 435 SAFETY - HOOKS . 544 , 544a . Ormerod's 436 545. King's 437 546. West's 438 547. Walker's . 438 SAFETY - CAGES . 548. Owen's 549. Hasard's 439 550. Calow's 440 440 ...
... ( fixed ) 542. Cage - catches 433 434 543. Water - winding tank 435 SAFETY - HOOKS . 544 , 544a . Ormerod's 436 545. King's 437 546. West's 438 547. Walker's . 438 SAFETY - CAGES . 548. Owen's 549. Hasard's 439 550. Calow's 440 440 ...
Страница xxvii
... fixed by various authorities at distances of from 3 to ΙΟ miles . Coal has been worked under the sea here since the year 1872 at the North Seaton colliery . The royalties are payable to the Crown , the method of working most in favour ...
... fixed by various authorities at distances of from 3 to ΙΟ miles . Coal has been worked under the sea here since the year 1872 at the North Seaton colliery . The royalties are payable to the Crown , the method of working most in favour ...
Страница xxxii
... fixed by the Commission of 4000 feet has been very nearly reached , if not actually reached , in Belgium , without any serious difficulty from the high temperature . The deepest workings in this country are those of the Pendleton ...
... fixed by the Commission of 4000 feet has been very nearly reached , if not actually reached , in Belgium , without any serious difficulty from the high temperature . The deepest workings in this country are those of the Pendleton ...
Страница 55
... permanent entrance to the hole and a vertical guide for the chisel . Above the pit is fixed the spring - pole ( Fig . 75 , 17 ) . This is a young larch tree about 30 feet in length . The BORING : HAND , STEAM , RODS , ROPES , ETC. 55.
... permanent entrance to the hole and a vertical guide for the chisel . Above the pit is fixed the spring - pole ( Fig . 75 , 17 ) . This is a young larch tree about 30 feet in length . The BORING : HAND , STEAM , RODS , ROPES , ETC. 55.
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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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