Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 17-2
... tapes are 15 and 30 m , the heavier , 25 , 50 and 100 m long . Most long tapes are on reels , which should be of ample size , for a wet and dirty tape fills a larger reel than a clean one , and long tapes for surface surveying at mines ...
... tapes are 15 and 30 m , the heavier , 25 , 50 and 100 m long . Most long tapes are on reels , which should be of ample size , for a wet and dirty tape fills a larger reel than a clean one , and long tapes for surface surveying at mines ...
Halaman 17-18
... tapes in daily use . A tape subjected to rough usage will soon have several repaired places , which often cause errors in its length . ( b ) Amount of pull has a very appreciable effect upon the length of a tape ; ordinary , light 100 - ft ...
... tapes in daily use . A tape subjected to rough usage will soon have several repaired places , which often cause errors in its length . ( b ) Amount of pull has a very appreciable effect upon the length of a tape ; ordinary , light 100 - ft ...
Halaman 18-15
... Tape reels for underground work should be larger and stronger than for surface work . If the type shown at a , Fig 20 , be employed , for a ribbon tape 100 ft long , the reel should b Fig 20. Tape Reels have a capacity of 150 or 200 ft ...
... Tape reels for underground work should be larger and stronger than for surface work . If the type shown at a , Fig 20 , be employed , for a ribbon tape 100 ft long , the reel should b Fig 20. Tape Reels have a capacity of 150 or 200 ft ...
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