Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
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Страница vii
... LAMPS 280 XII . XIII . XIV . BLASTING WATER - CARTRIDGES , FLAMELESS EXPLOSIVES , LIME , WEDGING , ELECTRIC FUSE , ETC .. POWER DRILLS AND HEADING MACHINERY COAL - CUTTING MACHINERY . 295 305 312 321 XVI . XV . TIMBERING : WOODEN AND ...
... LAMPS 280 XII . XIII . XIV . BLASTING WATER - CARTRIDGES , FLAMELESS EXPLOSIVES , LIME , WEDGING , ELECTRIC FUSE , ETC .. POWER DRILLS AND HEADING MACHINERY COAL - CUTTING MACHINERY . 295 305 312 321 XVI . XV . TIMBERING : WOODEN AND ...
Страница ix
... lamps compared with that of Candles XIII . Weight of Safety - lamps without Oil and Wick XIV . Strength of Wooden Bars : Yorkshire College Tests XV . Strength of Steel Bars • XVI . Strength of Wooden Props : Yorkshire College Tests XVII ...
... lamps compared with that of Candles XIII . Weight of Safety - lamps without Oil and Wick XIV . Strength of Wooden Bars : Yorkshire College Tests XV . Strength of Steel Bars • XVI . Strength of Wooden Props : Yorkshire College Tests XVII ...
Страница xvii
... lamp in shaft 200 290. Furnace and dumb - driít 200 291. Single furnace in pit 200 292. Double furnace in pit 201 293. Range of four furnaces in pit 202 294 , 295. Hypothetical downcasts 205 296. Pressure and temperature in furnace pit ...
... lamp in shaft 200 290. Furnace and dumb - driít 200 291. Single furnace in pit 200 292. Double furnace in pit 201 293. Range of four furnaces in pit 202 294 , 295. Hypothetical downcasts 205 296. Pressure and temperature in furnace pit ...
Страница xviii
... LAMPS . 349. Gas and gauze . 350. Davy lamp 351. Clanny lamp 352. Stephenson lamp 353. Stephenson lamp , enlargement 354. Mueseler . 355. Marsaut 356. Tin - can Davy . 357. Shielded lamp ( " Protector , " Mueseler ) : section 358. Shielded ...
... LAMPS . 349. Gas and gauze . 350. Davy lamp 351. Clanny lamp 352. Stephenson lamp 353. Stephenson lamp , enlargement 354. Mueseler . 355. Marsaut 356. Tin - can Davy . 357. Shielded lamp ( " Protector , " Mueseler ) : section 358. Shielded ...
Страница xix
... lamp 361. Morgan lamp : elevation 362 . " " 362a . Clifford lamp . 286 287 section 287 287 363. Wolff detonating lamp 288 364. Howat deflector 288 365. Ashworth - Hepplewhite - Gray 289 365a . Ashworth - Hepplewhite - Gray , shielded ...
... lamp 361. Morgan lamp : elevation 362 . " " 362a . Clifford lamp . 286 287 section 287 287 363. Wolff detonating lamp 288 364. Howat deflector 288 365. Ashworth - Hepplewhite - Gray 289 365a . Ashworth - Hepplewhite - Gray , shielded ...
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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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