Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Hasil 1-3 dari 86
Halaman 23-49
... timber lining , or at bottom of shaft . SPARKS FROM LOCO- MOTIVES passing near shaft mouth . INCENDIARISM . COAL - DUST EXPLOSION throwing hot coked dust on timber or loose coal so that , on reëstablishing air current , fires start up ...
... timber lining , or at bottom of shaft . SPARKS FROM LOCO- MOTIVES passing near shaft mouth . INCENDIARISM . COAL - DUST EXPLOSION throwing hot coked dust on timber or loose coal so that , on reëstablishing air current , fires start up ...
Halaman 25-31
... TIMBER ( By Prof C. H. Burnside ) Estimates of timber tracts are based on amount of standing timber , cost of logging and of transportation , and value of land after logging . Depending on the degree of accuracy required in an estimate ...
... TIMBER ( By Prof C. H. Burnside ) Estimates of timber tracts are based on amount of standing timber , cost of logging and of transportation , and value of land after logging . Depending on the degree of accuracy required in an estimate ...
Halaman 26-33
... timber and its framing in items 3 and 5 above . Attempts to give costs are almost futile , as conditions and prices ... Timber and foundation materials are usually obtained locally . Timber needed : 2 - in planks , 6-12 in wide ; timbers ...
... timber and its framing in items 3 and 5 above . Attempts to give costs are almost futile , as conditions and prices ... Timber and foundation materials are usually obtained locally . Timber needed : 2 - in planks , 6-12 in wide ; timbers ...
Isi
COMPRESSED | 15 |
Applications Definitions Data | 15-44 |
Accident Compensation Pensions | 16-1 |
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 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 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 vein vertical wire zinc