Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
Dari dalam buku
Hasil 1-3 dari 78
Halaman 23-18
... cause immediate withdrawal from the place , unless breathing apparatus is used . In a chamber con- taining 0.25 % of CO , a canary showed distress in 1 min and fell from its perch in 3 min . Burrell remained in this atmos 20 min , which ...
... cause immediate withdrawal from the place , unless breathing apparatus is used . In a chamber con- taining 0.25 % of CO , a canary showed distress in 1 min and fell from its perch in 3 min . Burrell remained in this atmos 20 min , which ...
Halaman 23-42
... cause , no distinction is made in Tables 23a and 24 , but the Bureau of Mines is now separating " cause ignition " from means of propagation . " Colliery explosion disasters from CH , and coal dust , acting together or alone , in which ...
... cause , no distinction is made in Tables 23a and 24 , but the Bureau of Mines is now separating " cause ignition " from means of propagation . " Colliery explosion disasters from CH , and coal dust , acting together or alone , in which ...
Halaman 23-49
... cause of fires in collieries is ignition of CH4 by longflame explosives ; or coal may take fire from flame of over- charged shots . In metal mines , fires were formerly caused by lighted CANDLE ENDS dropping onto timbers or inflammable ...
... cause of fires in collieries is ignition of CH4 by longflame explosives ; or coal may take fire from flame of over- charged shots . In metal mines , fires were formerly caused by lighted CANDLE ENDS dropping onto timbers or inflammable ...
Isi
AND SORTING OF ORES | 15 |
ELECTRIC POWER | 16-1 |
sion Wiring | 19-1 |
Hak Cipta | |
12 bagian lainnya tidak diperlihatkan
Edisi yang lain - Lihat semua
Istilah dan frasa umum
adjustment Aerial Tramway anthracite approx assay aver borax buckets Bur Mines capac carriers cars charge chute claim coal mines 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 grade hoisting horiz intercooler labor lamp less litharge loaders loading lode long ton machine material 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 valve vein vertical wire zinc