Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
Dari dalam buku
Hasil 1-3 dari 74
Halaman 7-3
... hoisting water often have no ladderway and operate automatically . TWO - COMPARTMENT shaft ( one compartment for unbalanced hoisting , with pipe and ladderway ) is suited only to shallow mines of small production , where low sinking ...
... hoisting water often have no ladderway and operate automatically . TWO - COMPARTMENT shaft ( one compartment for unbalanced hoisting , with pipe and ladderway ) is suited only to shallow mines of small production , where low sinking ...
Halaman 12-1
... Hoisting Systems .. 02 20. Hoisting from Deep Shafts .. 58 2. Hoisting Drums .. 07 3. Brakes and Clutches . 14 21. Examples of Hoisting Practice . 22. Costs of Hoisting .. 58 59 4. Motor and Hoist Connections . 17 23. Design of ...
... Hoisting Systems .. 02 20. Hoisting from Deep Shafts .. 58 2. Hoisting Drums .. 07 3. Brakes and Clutches . 14 21. Examples of Hoisting Practice . 22. Costs of Hoisting .. 58 59 4. Motor and Hoist Connections . 17 23. Design of ...
Halaman 12-50
... hoisted per min 33 000. ) Examples and costs of hoisting engines . approx costs in 1914. Present costs ( 1938 ) especially designed and costs vary greatly . ordinary geared hoists . Table 14 gives data of large direct - acting hoists ...
... hoisted per min 33 000. ) Examples and costs of hoisting engines . approx costs in 1914. Present costs ( 1938 ) especially designed and costs vary greatly . ordinary geared hoists . Table 14 gives data of large direct - acting hoists ...
Edisi yang lain - Lihat semua
Istilah dan frasa umum
angle Ariz aver bench black powder blasting block bottom broken caps cars caving chalcocite chalcopyrite churn drills chutes coal copper core cost per ft cribbed cross-sec crosscuts crystals Data deposits depth diam driven dynamite excavation explosives face filled stopes floor footwall ft deep ft high ft long ft wide fuse gelatin grizzly ground hammer drills hanging wall haulage level hematite hoisting holes horiz igneous rocks inclined intervals iron jackhammers labor lagging limestone loading magnetite manway Mesabi Range method minerals mining mucking orebody pillars pipe porphyry posts powder pump pyrite pyrrhotite quartz quartzite raises rock rods samples sand schist scraper sets shift shovel shrinkage stopes side sill sinking slice sludge soft sphalerite square-set steel stope stulls sub-level sulphide surface Table thick timber tons top-slicing Total tunnel usually veins ventilation waste width