Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 4-3
... base C6H10N4013 . Explosive base Ethylene glycol dinitrate ... C2H1 ( NO3 ) 2 ...... Explosive base , and to reduce freezing point Nitrocellulose ( guncotton ) .. ( CgH7 ( NO3 ) 3O2 ) x Explosive base Nitrostarch .. Organic nitro ...
... base C6H10N4013 . Explosive base Ethylene glycol dinitrate ... C2H1 ( NO3 ) 2 ...... Explosive base , and to reduce freezing point Nitrocellulose ( guncotton ) .. ( CgH7 ( NO3 ) 3O2 ) x Explosive base Nitrostarch .. Organic nitro ...
Halaman 10-25
... base A by a layer of sealing wax ; the wax must not be touched with the fingers after it is in place . A cover protects the apparatus from air currents ; for the dimensions shown in Fig 40 an ordinary glass tumbler placed bottom upward ...
... base A by a layer of sealing wax ; the wax must not be touched with the fingers after it is in place . A cover protects the apparatus from air currents ; for the dimensions shown in Fig 40 an ordinary glass tumbler placed bottom upward ...
Halaman 10-519
... base blocks and head boards are generally necessary , to prevent props from being forced into floor or roof . Fig 785 , 786 show examples of gangway sets made by the Carnegie Steel Co in numerous forms and sections of leg and collar ...
... base blocks and head boards are generally necessary , to prevent props from being forced into floor or roof . Fig 785 , 786 show examples of gangway sets made by the Carnegie Steel Co in numerous forms and sections of leg and collar ...
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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