Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 17-19
... measured clockwise , usually from the south . In measuring a deflection angle the telescope has to be inverted , whence any error in line of collimation will be introduced into deflection angle ; such error may be compensated by turning ...
... measured clockwise , usually from the south . In measuring a deflection angle the telescope has to be inverted , whence any error in line of collimation will be introduced into deflection angle ; such error may be compensated by turning ...
Halaman 17-47
... measured ; the method is often used as a control for a topographic or hydrographic survey . A triangulation system comprises a series of triangles , the corners of which are the observing stations or points which it is desired to locate ...
... measured ; the method is often used as a control for a topographic or hydrographic survey . A triangulation system comprises a series of triangles , the corners of which are the observing stations or points which it is desired to locate ...
Halaman 40-45
... measuring power , if its effic is known . ELECTRIC BRAKES are on this principle , with the generator stator hung on ball bearings , so that the torque can be measured . By running them as motors they will accurately measure power input ...
... measuring power , if its effic is known . ELECTRIC BRAKES are on this principle , with the generator stator hung on ball bearings , so that the torque can be measured . By running them as motors they will accurately measure power input ...
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COMPRESSED AIR PRACTICE | 15-2 |
Appli | 15-15 |
Hydraulic Compressors | 15-22 |
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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