Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
Dari dalam buku
Hasil 1-3 dari 83
Halaman 17-38
... determining contours for a small - scale map . With an aneroid , results as close as 10 ft may be obtained , but not without repeating observations and using instrument with great care . The error in eleva- tions determined by barometer ...
... determining contours for a small - scale map . With an aneroid , results as close as 10 ft may be obtained , but not without repeating observations and using instrument with great care . The error in eleva- tions determined by barometer ...
Halaman 25-14
... determined . Presence of any con- siderable amount of buried timber prohibits dredging . Provision for handling débris is largely a question of dirty water , which can not be settled to a clear overflow ; 50 miner's inches flowing into ...
... determined . Presence of any con- siderable amount of buried timber prohibits dredging . Provision for handling débris is largely a question of dirty water , which can not be settled to a clear overflow ; 50 miner's inches flowing into ...
Halaman 32-6
... determined by analysis and assay of the samples ( Art 2 ) . The principal metals in smelting ores are Pb , Cu , Au and Ag . Pb and Cu are reported in percentages . The value of Cu is determined by the standard quotation per lb ; of Pb ...
... determined by analysis and assay of the samples ( Art 2 ) . The principal metals in smelting ores are Pb , Cu , Au and Ag . Pb and Cu are reported in percentages . The value of Cu is determined by the standard quotation per lb ; of Pb ...
Isi
COMPRESSED | 15 |
Applications Definitions Data | 15-44 |
Accident Compensation Pensions | 16-1 |
Hak Cipta | |
15 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 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