Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 18-16
... station ; distances to the roof , walls , and floor were then recorded at as many radiating angles in the plane of the disk as desired . For smaller - scale work in a metal mine the same principle can be adopted in simpler manner , viz ...
... station ; distances to the roof , walls , and floor were then recorded at as many radiating angles in the plane of the disk as desired . For smaller - scale work in a metal mine the same principle can be adopted in simpler manner , viz ...
Halaman 23-59
... station , with a spare set for a single crew of 5 men . The station should be near the mine entrance , but not in line with a slope or drift , nor near enough to be destroyed in a fire or explosion . It should comprise a cool , fire ...
... station , with a spare set for a single crew of 5 men . The station should be near the mine entrance , but not in line with a slope or drift , nor near enough to be destroyed in a fire or explosion . It should comprise a cool , fire ...
Halaman 26-23
Robert Peele, John Adams Church. 13. ANGLE AND SUMMIT STATIONS Angle stations are required for horiz deflections ... station , with both pairs of cables anchored ; in it , the carriers detach automatically , but 2 men are required to ...
Robert Peele, John Adams Church. 13. ANGLE AND SUMMIT STATIONS Angle stations are required for horiz deflections ... station , with both pairs of cables anchored ; in it , the carriers detach automatically , but 2 men are required to ...
Isi
COMPRESSED AIR PRACTICE | 15-2 |
Appli | 15-15 |
Hydraulic Compressors | 15-22 |
Hak Cipta | |
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adjustment Aerial Tramway anthracite approx assay aver borax buckets Bur Mines capac carriers cars charge chute claim coal mines compressed compressor concentrate conveyer copper cost crusher crushing cu ft cupel cyanide deflection diam discharge distance drill dust elev engineer explosions feed filter fire firedamp gold hoisting horiz intercooler labor lamp less litharge loaders loading lode long ton machine mechanical metal method mill mineral motor operation pipe plant plate plumb-bob pump pyrite rock safety lamps sample screen shaft sheave short ton side silver sizes Sodium carbonate solution speed station steel stopes surface survey Table tape telescope temp tension tests timber tion tons Total towers track cable traction rope tramway Trans transit traverse underground usually vein vertical wire zinc