Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 15-53
... shows a typical set - up . The formula given above for orifice meters may be used . Fig 59 shows dimensions of standard nozzles for such tests . Fig 58 Measuring leakage in air lines . A rough method is to find the percentage of com ...
... shows a typical set - up . The formula given above for orifice meters may be used . Fig 59 shows dimensions of standard nozzles for such tests . Fig 58 Measuring leakage in air lines . A rough method is to find the percentage of com ...
Halaman 23-31
... show ratio of total injuries to fatalities in 1930 was about 50 to 1 ; in 1935 , 53 to 1 . ish Mines Dept , 1935 report , shows 155 injuries to 1 fatality , but allowance must be made for differences in defining minor in- juries . NOTE ...
... show ratio of total injuries to fatalities in 1930 was about 50 to 1 ; in 1935 , 53 to 1 . ish Mines Dept , 1935 report , shows 155 injuries to 1 fatality , but allowance must be made for differences in defining minor in- juries . NOTE ...
Halaman 35-2
... shows distribution of -3 / 8 - in size in raw slack and after mixing . MARKET STANDARDS AND USES OF BITUMINOUS COAL ( 1 ) Definite standards for bitumi- nous are lacking with which to compare results ; anthracite is accepted or rejected ...
... shows distribution of -3 / 8 - in size in raw slack and after mixing . MARKET STANDARDS AND USES OF BITUMINOUS COAL ( 1 ) Definite standards for bitumi- nous are lacking with which to compare results ; anthracite is accepted or rejected ...
Isi
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